21318580

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9433}}^1$

素因数の和:9555

約数の個数: 24

約数和(自身を含む): 45169992

約数和(自身を除く): 23851412

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9433, 18866, 37732, 47165, 94330, 188660, 1065929, 2131858, 4263716, 5329645, 10659290, 21318580]

約数ペア:

[(1, 21318580), (2, 10659290), (4, 5329645), (5, 4263716), (10, 2131858), (20, 1065929), (113, 188660), (226, 94330), (452, 47165), (565, 37732), (1130, 18866), (2260, 9433)]