Given the Number 419,020,800, Calculate (Find) All the Factors (All the Divisors) of the Number 419,020,800 (the Proper, the Improper and the Prime Factors)

All the factors (divisors) of the number 419,020,800

1. Carry out the prime factorization of the number 419,020,800:

The prime factorization of a number: finding the prime numbers that multiply together to make that number.


419,020,800 = 214 × 3 × 52 × 11 × 31
419,020,800 is not a prime number but a composite one.


* Prime number: a natural number that is divisible (divided evenly) only by 1 and itself. A prime number has exactly two factors: 1 and the number itself.
* Composite number: a natural number that has at least one other factor than 1 and itself.


2. Multiply the prime factors of the number 419,020,800

Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.


Also consider the exponents of these prime factors.

Also add 1 to the list of factors (divisors). All the numbers are divisible by 1.


All the factors (divisors) are listed below - in ascending order

The list of factors (divisors):

neither prime nor composite = 1
prime factor = 2
prime factor = 3
22 = 4
prime factor = 5
2 × 3 = 6
23 = 8
2 × 5 = 10
prime factor = 11
22 × 3 = 12
3 × 5 = 15
24 = 16
22 × 5 = 20
2 × 11 = 22
23 × 3 = 24
52 = 25
2 × 3 × 5 = 30
prime factor = 31
25 = 32
3 × 11 = 33
23 × 5 = 40
22 × 11 = 44
24 × 3 = 48
2 × 52 = 50
5 × 11 = 55
22 × 3 × 5 = 60
2 × 31 = 62
26 = 64
2 × 3 × 11 = 66
3 × 52 = 75
24 × 5 = 80
23 × 11 = 88
3 × 31 = 93
25 × 3 = 96
22 × 52 = 100
2 × 5 × 11 = 110
23 × 3 × 5 = 120
22 × 31 = 124
27 = 128
22 × 3 × 11 = 132
2 × 3 × 52 = 150
5 × 31 = 155
25 × 5 = 160
3 × 5 × 11 = 165
24 × 11 = 176
2 × 3 × 31 = 186
26 × 3 = 192
23 × 52 = 200
22 × 5 × 11 = 220
24 × 3 × 5 = 240
23 × 31 = 248
28 = 256
23 × 3 × 11 = 264
52 × 11 = 275
22 × 3 × 52 = 300
2 × 5 × 31 = 310
26 × 5 = 320
2 × 3 × 5 × 11 = 330
11 × 31 = 341
25 × 11 = 352
22 × 3 × 31 = 372
27 × 3 = 384
24 × 52 = 400
23 × 5 × 11 = 440
3 × 5 × 31 = 465
25 × 3 × 5 = 480
24 × 31 = 496
29 = 512
24 × 3 × 11 = 528
2 × 52 × 11 = 550
23 × 3 × 52 = 600
22 × 5 × 31 = 620
27 × 5 = 640
22 × 3 × 5 × 11 = 660
2 × 11 × 31 = 682
26 × 11 = 704
23 × 3 × 31 = 744
28 × 3 = 768
52 × 31 = 775
25 × 52 = 800
3 × 52 × 11 = 825
24 × 5 × 11 = 880
2 × 3 × 5 × 31 = 930
26 × 3 × 5 = 960
25 × 31 = 992
3 × 11 × 31 = 1,023
210 = 1,024
25 × 3 × 11 = 1,056
22 × 52 × 11 = 1,100
24 × 3 × 52 = 1,200
23 × 5 × 31 = 1,240
28 × 5 = 1,280
23 × 3 × 5 × 11 = 1,320
22 × 11 × 31 = 1,364
27 × 11 = 1,408
24 × 3 × 31 = 1,488
29 × 3 = 1,536
2 × 52 × 31 = 1,550
26 × 52 = 1,600
2 × 3 × 52 × 11 = 1,650
5 × 11 × 31 = 1,705
25 × 5 × 11 = 1,760
22 × 3 × 5 × 31 = 1,860
27 × 3 × 5 = 1,920
26 × 31 = 1,984
2 × 3 × 11 × 31 = 2,046
211 = 2,048
26 × 3 × 11 = 2,112
23 × 52 × 11 = 2,200
3 × 52 × 31 = 2,325
25 × 3 × 52 = 2,400
24 × 5 × 31 = 2,480
29 × 5 = 2,560
24 × 3 × 5 × 11 = 2,640
23 × 11 × 31 = 2,728
28 × 11 = 2,816
25 × 3 × 31 = 2,976
210 × 3 = 3,072
22 × 52 × 31 = 3,100
27 × 52 = 3,200
22 × 3 × 52 × 11 = 3,300
2 × 5 × 11 × 31 = 3,410
26 × 5 × 11 = 3,520
23 × 3 × 5 × 31 = 3,720
28 × 3 × 5 = 3,840
27 × 31 = 3,968
22 × 3 × 11 × 31 = 4,092
212 = 4,096
27 × 3 × 11 = 4,224
24 × 52 × 11 = 4,400
2 × 3 × 52 × 31 = 4,650
26 × 3 × 52 = 4,800
25 × 5 × 31 = 4,960
3 × 5 × 11 × 31 = 5,115
210 × 5 = 5,120
25 × 3 × 5 × 11 = 5,280
24 × 11 × 31 = 5,456
29 × 11 = 5,632
26 × 3 × 31 = 5,952
211 × 3 = 6,144
23 × 52 × 31 = 6,200
28 × 52 = 6,400
23 × 3 × 52 × 11 = 6,600
22 × 5 × 11 × 31 = 6,820
27 × 5 × 11 = 7,040
24 × 3 × 5 × 31 = 7,440
29 × 3 × 5 = 7,680
28 × 31 = 7,936
23 × 3 × 11 × 31 = 8,184
213 = 8,192
28 × 3 × 11 = 8,448
52 × 11 × 31 = 8,525
25 × 52 × 11 = 8,800
22 × 3 × 52 × 31 = 9,300
27 × 3 × 52 = 9,600
26 × 5 × 31 = 9,920
2 × 3 × 5 × 11 × 31 = 10,230
211 × 5 = 10,240
26 × 3 × 5 × 11 = 10,560
25 × 11 × 31 = 10,912
210 × 11 = 11,264
27 × 3 × 31 = 11,904
212 × 3 = 12,288
24 × 52 × 31 = 12,400
29 × 52 = 12,800
24 × 3 × 52 × 11 = 13,200
23 × 5 × 11 × 31 = 13,640
28 × 5 × 11 = 14,080
25 × 3 × 5 × 31 = 14,880
210 × 3 × 5 = 15,360
29 × 31 = 15,872
24 × 3 × 11 × 31 = 16,368
214 = 16,384
29 × 3 × 11 = 16,896
2 × 52 × 11 × 31 = 17,050
26 × 52 × 11 = 17,600
23 × 3 × 52 × 31 = 18,600
28 × 3 × 52 = 19,200
27 × 5 × 31 = 19,840
22 × 3 × 5 × 11 × 31 = 20,460
This list continues below...

... This list continues from above
212 × 5 = 20,480
27 × 3 × 5 × 11 = 21,120
26 × 11 × 31 = 21,824
211 × 11 = 22,528
28 × 3 × 31 = 23,808
213 × 3 = 24,576
25 × 52 × 31 = 24,800
3 × 52 × 11 × 31 = 25,575
210 × 52 = 25,600
25 × 3 × 52 × 11 = 26,400
24 × 5 × 11 × 31 = 27,280
29 × 5 × 11 = 28,160
26 × 3 × 5 × 31 = 29,760
211 × 3 × 5 = 30,720
210 × 31 = 31,744
25 × 3 × 11 × 31 = 32,736
210 × 3 × 11 = 33,792
22 × 52 × 11 × 31 = 34,100
27 × 52 × 11 = 35,200
24 × 3 × 52 × 31 = 37,200
29 × 3 × 52 = 38,400
28 × 5 × 31 = 39,680
23 × 3 × 5 × 11 × 31 = 40,920
213 × 5 = 40,960
28 × 3 × 5 × 11 = 42,240
27 × 11 × 31 = 43,648
212 × 11 = 45,056
29 × 3 × 31 = 47,616
214 × 3 = 49,152
26 × 52 × 31 = 49,600
2 × 3 × 52 × 11 × 31 = 51,150
211 × 52 = 51,200
26 × 3 × 52 × 11 = 52,800
25 × 5 × 11 × 31 = 54,560
210 × 5 × 11 = 56,320
27 × 3 × 5 × 31 = 59,520
212 × 3 × 5 = 61,440
211 × 31 = 63,488
26 × 3 × 11 × 31 = 65,472
211 × 3 × 11 = 67,584
23 × 52 × 11 × 31 = 68,200
28 × 52 × 11 = 70,400
25 × 3 × 52 × 31 = 74,400
210 × 3 × 52 = 76,800
29 × 5 × 31 = 79,360
24 × 3 × 5 × 11 × 31 = 81,840
214 × 5 = 81,920
29 × 3 × 5 × 11 = 84,480
28 × 11 × 31 = 87,296
213 × 11 = 90,112
210 × 3 × 31 = 95,232
27 × 52 × 31 = 99,200
22 × 3 × 52 × 11 × 31 = 102,300
212 × 52 = 102,400
27 × 3 × 52 × 11 = 105,600
26 × 5 × 11 × 31 = 109,120
211 × 5 × 11 = 112,640
28 × 3 × 5 × 31 = 119,040
213 × 3 × 5 = 122,880
212 × 31 = 126,976
27 × 3 × 11 × 31 = 130,944
212 × 3 × 11 = 135,168
24 × 52 × 11 × 31 = 136,400
29 × 52 × 11 = 140,800
26 × 3 × 52 × 31 = 148,800
211 × 3 × 52 = 153,600
210 × 5 × 31 = 158,720
25 × 3 × 5 × 11 × 31 = 163,680
210 × 3 × 5 × 11 = 168,960
29 × 11 × 31 = 174,592
214 × 11 = 180,224
211 × 3 × 31 = 190,464
28 × 52 × 31 = 198,400
23 × 3 × 52 × 11 × 31 = 204,600
213 × 52 = 204,800
28 × 3 × 52 × 11 = 211,200
27 × 5 × 11 × 31 = 218,240
212 × 5 × 11 = 225,280
29 × 3 × 5 × 31 = 238,080
214 × 3 × 5 = 245,760
213 × 31 = 253,952
28 × 3 × 11 × 31 = 261,888
213 × 3 × 11 = 270,336
25 × 52 × 11 × 31 = 272,800
210 × 52 × 11 = 281,600
27 × 3 × 52 × 31 = 297,600
212 × 3 × 52 = 307,200
211 × 5 × 31 = 317,440
26 × 3 × 5 × 11 × 31 = 327,360
211 × 3 × 5 × 11 = 337,920
210 × 11 × 31 = 349,184
212 × 3 × 31 = 380,928
29 × 52 × 31 = 396,800
24 × 3 × 52 × 11 × 31 = 409,200
214 × 52 = 409,600
29 × 3 × 52 × 11 = 422,400
28 × 5 × 11 × 31 = 436,480
213 × 5 × 11 = 450,560
210 × 3 × 5 × 31 = 476,160
214 × 31 = 507,904
29 × 3 × 11 × 31 = 523,776
214 × 3 × 11 = 540,672
26 × 52 × 11 × 31 = 545,600
211 × 52 × 11 = 563,200
28 × 3 × 52 × 31 = 595,200
213 × 3 × 52 = 614,400
212 × 5 × 31 = 634,880
27 × 3 × 5 × 11 × 31 = 654,720
212 × 3 × 5 × 11 = 675,840
211 × 11 × 31 = 698,368
213 × 3 × 31 = 761,856
210 × 52 × 31 = 793,600
25 × 3 × 52 × 11 × 31 = 818,400
210 × 3 × 52 × 11 = 844,800
29 × 5 × 11 × 31 = 872,960
214 × 5 × 11 = 901,120
211 × 3 × 5 × 31 = 952,320
210 × 3 × 11 × 31 = 1,047,552
27 × 52 × 11 × 31 = 1,091,200
212 × 52 × 11 = 1,126,400
29 × 3 × 52 × 31 = 1,190,400
214 × 3 × 52 = 1,228,800
213 × 5 × 31 = 1,269,760
28 × 3 × 5 × 11 × 31 = 1,309,440
213 × 3 × 5 × 11 = 1,351,680
212 × 11 × 31 = 1,396,736
214 × 3 × 31 = 1,523,712
211 × 52 × 31 = 1,587,200
26 × 3 × 52 × 11 × 31 = 1,636,800
211 × 3 × 52 × 11 = 1,689,600
210 × 5 × 11 × 31 = 1,745,920
212 × 3 × 5 × 31 = 1,904,640
211 × 3 × 11 × 31 = 2,095,104
28 × 52 × 11 × 31 = 2,182,400
213 × 52 × 11 = 2,252,800
210 × 3 × 52 × 31 = 2,380,800
214 × 5 × 31 = 2,539,520
29 × 3 × 5 × 11 × 31 = 2,618,880
214 × 3 × 5 × 11 = 2,703,360
213 × 11 × 31 = 2,793,472
212 × 52 × 31 = 3,174,400
27 × 3 × 52 × 11 × 31 = 3,273,600
212 × 3 × 52 × 11 = 3,379,200
211 × 5 × 11 × 31 = 3,491,840
213 × 3 × 5 × 31 = 3,809,280
212 × 3 × 11 × 31 = 4,190,208
29 × 52 × 11 × 31 = 4,364,800
214 × 52 × 11 = 4,505,600
211 × 3 × 52 × 31 = 4,761,600
210 × 3 × 5 × 11 × 31 = 5,237,760
214 × 11 × 31 = 5,586,944
213 × 52 × 31 = 6,348,800
28 × 3 × 52 × 11 × 31 = 6,547,200
213 × 3 × 52 × 11 = 6,758,400
212 × 5 × 11 × 31 = 6,983,680
214 × 3 × 5 × 31 = 7,618,560
213 × 3 × 11 × 31 = 8,380,416
210 × 52 × 11 × 31 = 8,729,600
212 × 3 × 52 × 31 = 9,523,200
211 × 3 × 5 × 11 × 31 = 10,475,520
214 × 52 × 31 = 12,697,600
29 × 3 × 52 × 11 × 31 = 13,094,400
214 × 3 × 52 × 11 = 13,516,800
213 × 5 × 11 × 31 = 13,967,360
214 × 3 × 11 × 31 = 16,760,832
211 × 52 × 11 × 31 = 17,459,200
213 × 3 × 52 × 31 = 19,046,400
212 × 3 × 5 × 11 × 31 = 20,951,040
210 × 3 × 52 × 11 × 31 = 26,188,800
214 × 5 × 11 × 31 = 27,934,720
212 × 52 × 11 × 31 = 34,918,400
214 × 3 × 52 × 31 = 38,092,800
213 × 3 × 5 × 11 × 31 = 41,902,080
211 × 3 × 52 × 11 × 31 = 52,377,600
213 × 52 × 11 × 31 = 69,836,800
214 × 3 × 5 × 11 × 31 = 83,804,160
212 × 3 × 52 × 11 × 31 = 104,755,200
214 × 52 × 11 × 31 = 139,673,600
213 × 3 × 52 × 11 × 31 = 209,510,400
214 × 3 × 52 × 11 × 31 = 419,020,800

The final answer:
(scroll down)

419,020,800 has 360 factors (divisors):
1; 2; 3; 4; 5; 6; 8; 10; 11; 12; 15; 16; 20; 22; 24; 25; 30; 31; 32; 33; 40; 44; 48; 50; 55; 60; 62; 64; 66; 75; 80; 88; 93; 96; 100; 110; 120; 124; 128; 132; 150; 155; 160; 165; 176; 186; 192; 200; 220; 240; 248; 256; 264; 275; 300; 310; 320; 330; 341; 352; 372; 384; 400; 440; 465; 480; 496; 512; 528; 550; 600; 620; 640; 660; 682; 704; 744; 768; 775; 800; 825; 880; 930; 960; 992; 1,023; 1,024; 1,056; 1,100; 1,200; 1,240; 1,280; 1,320; 1,364; 1,408; 1,488; 1,536; 1,550; 1,600; 1,650; 1,705; 1,760; 1,860; 1,920; 1,984; 2,046; 2,048; 2,112; 2,200; 2,325; 2,400; 2,480; 2,560; 2,640; 2,728; 2,816; 2,976; 3,072; 3,100; 3,200; 3,300; 3,410; 3,520; 3,720; 3,840; 3,968; 4,092; 4,096; 4,224; 4,400; 4,650; 4,800; 4,960; 5,115; 5,120; 5,280; 5,456; 5,632; 5,952; 6,144; 6,200; 6,400; 6,600; 6,820; 7,040; 7,440; 7,680; 7,936; 8,184; 8,192; 8,448; 8,525; 8,800; 9,300; 9,600; 9,920; 10,230; 10,240; 10,560; 10,912; 11,264; 11,904; 12,288; 12,400; 12,800; 13,200; 13,640; 14,080; 14,880; 15,360; 15,872; 16,368; 16,384; 16,896; 17,050; 17,600; 18,600; 19,200; 19,840; 20,460; 20,480; 21,120; 21,824; 22,528; 23,808; 24,576; 24,800; 25,575; 25,600; 26,400; 27,280; 28,160; 29,760; 30,720; 31,744; 32,736; 33,792; 34,100; 35,200; 37,200; 38,400; 39,680; 40,920; 40,960; 42,240; 43,648; 45,056; 47,616; 49,152; 49,600; 51,150; 51,200; 52,800; 54,560; 56,320; 59,520; 61,440; 63,488; 65,472; 67,584; 68,200; 70,400; 74,400; 76,800; 79,360; 81,840; 81,920; 84,480; 87,296; 90,112; 95,232; 99,200; 102,300; 102,400; 105,600; 109,120; 112,640; 119,040; 122,880; 126,976; 130,944; 135,168; 136,400; 140,800; 148,800; 153,600; 158,720; 163,680; 168,960; 174,592; 180,224; 190,464; 198,400; 204,600; 204,800; 211,200; 218,240; 225,280; 238,080; 245,760; 253,952; 261,888; 270,336; 272,800; 281,600; 297,600; 307,200; 317,440; 327,360; 337,920; 349,184; 380,928; 396,800; 409,200; 409,600; 422,400; 436,480; 450,560; 476,160; 507,904; 523,776; 540,672; 545,600; 563,200; 595,200; 614,400; 634,880; 654,720; 675,840; 698,368; 761,856; 793,600; 818,400; 844,800; 872,960; 901,120; 952,320; 1,047,552; 1,091,200; 1,126,400; 1,190,400; 1,228,800; 1,269,760; 1,309,440; 1,351,680; 1,396,736; 1,523,712; 1,587,200; 1,636,800; 1,689,600; 1,745,920; 1,904,640; 2,095,104; 2,182,400; 2,252,800; 2,380,800; 2,539,520; 2,618,880; 2,703,360; 2,793,472; 3,174,400; 3,273,600; 3,379,200; 3,491,840; 3,809,280; 4,190,208; 4,364,800; 4,505,600; 4,761,600; 5,237,760; 5,586,944; 6,348,800; 6,547,200; 6,758,400; 6,983,680; 7,618,560; 8,380,416; 8,729,600; 9,523,200; 10,475,520; 12,697,600; 13,094,400; 13,516,800; 13,967,360; 16,760,832; 17,459,200; 19,046,400; 20,951,040; 26,188,800; 27,934,720; 34,918,400; 38,092,800; 41,902,080; 52,377,600; 69,836,800; 83,804,160; 104,755,200; 139,673,600; 209,510,400 and 419,020,800
out of which 5 prime factors: 2; 3; 5; 11 and 31
419,020,800 and 1 are sometimes called improper factors, the others are called proper factors (proper divisors).

A quick way to find the factors (the divisors) of a number is to break it down into prime factors.


Then multiply the prime factors and their exponents, if any, in all their different combinations.


Calculate all the divisors (factors) of the given numbers

How to calculate (find) all the factors (divisors) of a number:

Break down the number into prime factors. Then multiply its prime factors in all their unique combinations, that give different results.

To calculate the common factors of two numbers:

The common factors (divisors) of two numbers are all the factors of the greatest common factor, gcf.

Calculate the greatest (highest) common factor (divisor) of the two numbers, gcf (hcf, gcd).

Break down the GCF into prime factors. Then multiply its prime factors in all their unique combinations, that give different results.

The latest 10 sets of calculated factors (divisors): of one number or the common factors of two numbers

What are all the proper, improper and prime factors (all the divisors) of the number 419,020,800? How to calculate them? May 27 16:52 UTC (GMT)
What are all the proper, improper and prime factors (all the divisors) of the number 79,685,760? How to calculate them? May 27 16:52 UTC (GMT)
What are all the proper, improper and prime factors (all the divisors) of the number 82,967? How to calculate them? May 27 16:52 UTC (GMT)
What are all the common factors (all the divisors and the prime factors) of the numbers 125 and 416? How to calculate them? May 27 16:52 UTC (GMT)
What are all the proper, improper and prime factors (all the divisors) of the number 21,666,699? How to calculate them? May 27 16:52 UTC (GMT)
What are all the proper, improper and prime factors (all the divisors) of the number 5,791,310? How to calculate them? May 27 16:52 UTC (GMT)
What are all the common factors (all the divisors and the prime factors) of the numbers 109,955 and 999,999,999,964? How to calculate them? May 27 16:52 UTC (GMT)
What are all the proper, improper and prime factors (all the divisors) of the number 402,545? How to calculate them? May 27 16:52 UTC (GMT)
What are all the proper, improper and prime factors (all the divisors) of the number 75,567,540? How to calculate them? May 27 16:52 UTC (GMT)
What are all the proper, improper and prime factors (all the divisors) of the number 6,609,022,598? How to calculate them? May 27 16:52 UTC (GMT)
The list of all the calculated factors (divisors) of one or two numbers

Factors (divisors), common factors (common divisors), the greatest common factor, GCF (also called the greatest common divisor, GCD, or the highest common factor, HCF)

  • If the number "t" is a factor (divisor) of the number "a" then in the prime factorization of "t" we will only encounter prime factors that also occur in the prime factorization of "a".
  • If there are exponents involved, the maximum value of an exponent for any base of a power that is found in the prime factorization of "t" (powers, or multiplicities) is at most equal to the exponent of the same base that is involved in the prime factorization of "a".
  • Hint: 23 = 2 × 2 × 2 = 8. 2 is called the base and 3 is the exponent. 23 is the power and 8 is the value of the power. We sometimes say that the number 2 is raised to the power of 3.
  • For example, 12 is a factor (divisor) of 120 - the remainder is zero when dividing 120 by 12.
  • Let's look at the prime factorization of both numbers and notice the bases and the exponents that occur in the prime factorization of both numbers:
  • 12 = 2 × 2 × 3 = 22 × 3
  • 120 = 2 × 2 × 2 × 3 × 5 = 23 × 3 × 5
  • 120 contains all the prime factors of 12, and all its bases' exponents are higher than those of 12.
  • If "t" is a common factor (divisor) of "a" and "b", then the prime factorization of "t" contains only the common prime factors involved in the prime factorizations of both "a" and "b".
  • If there are exponents involved, the maximum value of an exponent for any base of a power that is found in the prime factorization of "t" is at most equal to the minimum of the exponents of the same base that is involved in the prime factorization of both "a" and "b".
  • For example, 12 is the common factor of 48 and 360.
  • The remainder is zero when dividing either 48 or 360 by 12.
  • Here there are the prime factorizations of the three numbers, 12, 48 and 360:
  • 12 = 22 × 3
  • 48 = 24 × 3
  • 360 = 23 × 32 × 5
  • Please note that 48 and 360 have more factors (divisors): 2, 3, 4, 6, 8, 12, 24. Among them, 24 is the greatest common factor, GCF (or the greatest common divisor, GCD, or the highest common factor, HCF) of 48 and 360.
  • The greatest common factor, GCF, of two numbers, "a" and "b", is the product of all the common prime factors involved in the prime factorizations of both "a" and "b", taken by the lowest exponents.
  • Based on this rule it is calculated the greatest common factor, GCF, (or the greatest common divisor GCD, HCF) of several numbers, as shown in the example below...
  • GCF, GCD (1,260; 3,024; 5,544) = ?
  • 1,260 = 22 × 32
  • 3,024 = 24 × 32 × 7
  • 5,544 = 23 × 32 × 7 × 11
  • The common prime factors are:
  • 2 - its lowest exponent (multiplicity) is: min.(2; 3; 4) = 2
  • 3 - its lowest exponent (multiplicity) is: min.(2; 2; 2) = 2
  • GCF, GCD (1,260; 3,024; 5,544) = 22 × 32 = 252
  • Coprime numbers:
  • If two numbers "a" and "b" have no other common factors (divisors) than 1, gfc, gcd, hcf (a; b) = 1, then the numbers "a" and "b" are called coprime (or relatively prime).
  • Factors of the GCF
  • If "a" and "b" are not coprime, then every common factor (divisor) of "a" and "b" is a also a factor (divisor) of the greatest common factor, GCF (greatest common divisor, GCD, highest common factor, HCF) of "a" and "b".