64006840

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{9817}}^1$

素因数の和:9991

約数の個数: 32

約数和(自身を含む): 144913680

約数和(自身を除く): 80906840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 9817, 19634, 39268, 49085, 78536, 98170, 196340, 392680, 1600171, 3200342, 6400684, 8000855, 12801368, 16001710, 32003420, 64006840]

約数ペア:

[(1, 64006840), (2, 32003420), (4, 16001710), (5, 12801368), (8, 8000855), (10, 6400684), (20, 3200342), (40, 1600171), (163, 392680), (326, 196340), (652, 98170), (815, 78536), (1304, 49085), (1630, 39268), (3260, 19634), (6520, 9817)]