1, 2, 4, 8
1, 3, 9
1, 2, 4, 13, 26, 52
1, 3, 23, 69
1, 3, 9, 11, 33, 99
1, 5, 41, 205
1, 3, 9, 13, 27, 39, 117, 351
1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500
1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1250, 1280, 1600, 2000, 2500, 2560, 3125, 3200, 4000, 5000, 6250, 6400, 8000, 10000, 12500, 12800, 15625, 16000, 20000, 25000, 31250, 32000, 40000, 50000, 62500, 64000, 78125, 80000, 100000, 125000, 156250, 160000, 200000, 250000, 312500, 320000, 390625, 400000, 500000, 625000, 781250, 800000, 1000000, 1250000, 1562500, 1600000, 1953125, 2000000, 2500000, 3125000, 3906250, 4000000, 5000000, 6250000, 7812500, 8000000, 10000000, 12500000, 15625000, 20000000, 25000000, 31250000, 40000000, 50000000, 62500000, 100000000, 125000000, 200000000, 250000000, 500000000, 1000000000
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The factors of 256 are:
1, 2, 4, 8, 16, 32, 64, 128, 256
The factors of 500 are:
1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500
The factors of 639 are:
1, 3, 9, 71, 213, 639
The factors of 16 are:
1, 2, 4, 8, 16
The factors of 25 are:
1, 5, 25
The factors of 26 are:
1, 2, 13, 26
The factors of 30 are:
1, 2, 3, 5, 6, 10, 15, 30
The factors of 54 are:
1, 2, 3, 6, 9, 18, 27, 54
The factors of 59 are:
1, 59
The factors of 61 are:
1, 61
The factors of 65 are:
1, 5, 13, 65
The factors of 77 are:
1, 7, 11, 77
The factors of 84 are:
1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
The factors of 6577 are:
1, 6577
The factors of 8454 are:
1, 2, 3, 6, 1409, 2818, 4227, 8454
The factors of 162530 are:
1, 2, 5, 10, 16253, 32506, 81265, 162530
The factors of 50 are: 1, 2, 5, 10, 25, 50
The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56
The factors of 72 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
The factors of 99 are: 1, 3, 9, 11, 33, 99
1, 2, 4, 11, 22, 44
1, 7, 49
1, 2, 4, 13, 26, 52
1, 73
1, 3, 9, 27, 81
1, 2, 41, 82
1, 3, 31, 93
1, 3, 9, 11, 33, 99
256=2^8, then the factors are 2,22,23,24,25,26,27,28
1, 639 Then by inspection of the number 639 , we note that each number is a multiple of '3' . So '3' is a factor. Also , slightly more 'tricky'. If we add the digits of 639 ; 6 + 3 + 9 = 18 1 + 8 = 9 . This means that the number has '9' is a factor. NB This only applies to factors/multiples of '9' Finally, divide 639 by 71 and/or 213 . If you have a whole number answer (No decimals), then those numbers are also factors of 639. Hence 639/71 = 9 & 329 / 213 = 3 So allthe given numbers are factors of 639.
1, 3, 9, 27, 71, 213, 639, 1917
Just 2
The factors of 1,278 are: 1 2 3 6 9 18 71 142 213 426 639 1,278