231931580

素因数分解:

$2^2\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{5807}}^1$

素因数の和:7813

約数の個数: 24

約数和(自身を含む): 487384128

約数和(自身を除く): 255452548

約数列:

[1, 2, 4, 5, 10, 20, 1997, 3994, 5807, 7988, 9985, 11614, 19970, 23228, 29035, 39940, 58070, 116140, 11596579, 23193158, 46386316, 57982895, 115965790, 231931580]

約数ペア:

[(1, 231931580), (2, 115965790), (4, 57982895), (5, 46386316), (10, 23193158), (20, 11596579), (1997, 116140), (3994, 58070), (5807, 39940), (7988, 29035), (9985, 23228), (11614, 19970)]