64997360

素因数分解:

$2^4\times 5^1\times {\mathrm{812467}}^1$

素因数の和:812480

約数の個数: 20

約数和(自身を含む): 151119048

約数和(自身を除く): 86121688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 812467, 1624934, 3249868, 4062335, 6499736, 8124670, 12999472, 16249340, 32498680, 64997360]

約数ペア:

[(1, 64997360), (2, 32498680), (4, 16249340), (5, 12999472), (8, 8124670), (10, 6499736), (16, 4062335), (20, 3249868), (40, 1624934), (80, 812467)]