64496680

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{5821}}^1$

素因数の和:6109

約数の個数: 32

約数和(自身を含む): 145666440

約数和(自身を除く): 81169760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 5821, 11080, 11642, 23284, 29105, 46568, 58210, 116420, 232840, 1612417, 3224834, 6449668, 8062085, 12899336, 16124170, 32248340, 64496680]

約数ペア:

[(1, 64496680), (2, 32248340), (4, 16124170), (5, 12899336), (8, 8062085), (10, 6449668), (20, 3224834), (40, 1612417), (277, 232840), (554, 116420), (1108, 58210), (1385, 46568), (2216, 29105), (2770, 23284), (5540, 11642), (5821, 11080)]