20649620

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9137}}^1$

素因数の和:9259

約数の個数: 24

約数和(自身を含む): 43752744

約数和(自身を除く): 23103124

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9137, 18274, 36548, 45685, 91370, 182740, 1032481, 2064962, 4129924, 5162405, 10324810, 20649620]

約数ペア:

[(1, 20649620), (2, 10324810), (4, 5162405), (5, 4129924), (10, 2064962), (20, 1032481), (113, 182740), (226, 91370), (452, 45685), (565, 36548), (1130, 18274), (2260, 9137)]