21955978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{3209}}^1$

素因数の和:3533

約数の個数: 16

約数和(自身を含む): 36054720

約数和(自身を除く): 14098742

約数列:

[1, 2, 11, 22, 311, 622, 3209, 3421, 6418, 6842, 35299, 70598, 997999, 1995998, 10977989, 21955978]

約数ペア:

[(1, 21955978), (2, 10977989), (11, 1995998), (22, 997999), (311, 70598), (622, 35299), (3209, 6842), (3421, 6418)]