64997920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31249}}^1$

素因数の和:31277

約数の個数: 48

約数和(自身を含む): 165375000

約数和(自身を除く): 100377080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 31249, 62498, 124996, 156245, 249992, 312490, 406237, 499984, 624980, 812474, 999968, 1249960, 1624948, 2031185, 2499920, 3249896, 4062370, 4999840, 6499792, 8124740, 12999584, 16249480, 32498960, 64997920]

約数ペア:

[(1, 64997920), (2, 32498960), (4, 16249480), (5, 12999584), (8, 8124740), (10, 6499792), (13, 4999840), (16, 4062370), (20, 3249896), (26, 2499920), (32, 2031185), (40, 1624948), (52, 1249960), (65, 999968), (80, 812474), (104, 624980), (130, 499984), (160, 406237), (208, 312490), (260, 249992), (416, 156245), (520, 124996), (1040, 62498), (2080, 31249)]