20640580

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9133}}^1$

素因数の和:9255

約数の個数: 24

約数和(自身を含む): 43733592

約数和(自身を除く): 23093012

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9133, 18266, 36532, 45665, 91330, 182660, 1032029, 2064058, 4128116, 5160145, 10320290, 20640580]

約数ペア:

[(1, 20640580), (2, 10320290), (4, 5160145), (5, 4128116), (10, 2064058), (20, 1032029), (113, 182660), (226, 91330), (452, 45665), (565, 36532), (1130, 18266), (2260, 9133)]