31397620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22111}}^1$

素因数の和:22191

約数の個数: 24

約数和(自身を含む): 66866688

約数和(自身を除く): 35469068

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 22111, 44222, 88444, 110555, 221110, 442220, 1569881, 3139762, 6279524, 7849405, 15698810, 31397620]

約数ペア:

[(1, 31397620), (2, 15698810), (4, 7849405), (5, 6279524), (10, 3139762), (20, 1569881), (71, 442220), (142, 221110), (284, 110555), (355, 88444), (710, 44222), (1420, 22111)]