68971820

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{21157}}^1$

素因数の和:21329

約数の個数: 24

約数和(自身を含む): 145736304

約数和(自身を除く): 76764484

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 21157, 42314, 84628, 105785, 211570, 423140, 3448591, 6897182, 13794364, 17242955, 34485910, 68971820]

約数ペア:

[(1, 68971820), (2, 34485910), (4, 17242955), (5, 13794364), (10, 6897182), (20, 3448591), (163, 423140), (326, 211570), (652, 105785), (815, 84628), (1630, 42314), (3260, 21157)]