66271640

素因数分解:

$2^3\times 5^1\times {\mathrm{1656791}}^1$

素因数の和:1656802

約数の個数: 16

約数和(自身を含む): 149111280

約数和(自身を除く): 82839640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1656791, 3313582, 6627164, 8283955, 13254328, 16567910, 33135820, 66271640]

約数ペア:

[(1, 66271640), (2, 33135820), (4, 16567910), (5, 13254328), (8, 8283955), (10, 6627164), (20, 3313582), (40, 1656791)]