31906040

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1531}}^1$

素因数の和:2063

約数の個数: 32

約数和(自身を含む): 71973360

約数和(自身を除く): 40067320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 1531, 2084, 2605, 3062, 4168, 5210, 6124, 7655, 10420, 12248, 15310, 20840, 30620, 61240, 797651, 1595302, 3190604, 3988255, 6381208, 7976510, 15953020, 31906040]

約数ペア:

[(1, 31906040), (2, 15953020), (4, 7976510), (5, 6381208), (8, 3988255), (10, 3190604), (20, 1595302), (40, 797651), (521, 61240), (1042, 30620), (1531, 20840), (2084, 15310), (2605, 12248), (3062, 10420), (4168, 7655), (5210, 6124)]