20404820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32911}}^1$

素因数の和:32951

約数の個数: 24

約数和(自身を含む): 44233728

約数和(自身を除く): 23828908

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32911, 65822, 131644, 164555, 329110, 658220, 1020241, 2040482, 4080964, 5101205, 10202410, 20404820]

約数ペア:

[(1, 20404820), (2, 10202410), (4, 5101205), (5, 4080964), (10, 2040482), (20, 1020241), (31, 658220), (62, 329110), (124, 164555), (155, 131644), (310, 65822), (620, 32911)]