20557540

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10177}}^1$

素因数の和:10287

約数の個数: 24

約数和(自身を含む): 43602552

約数和(自身を除く): 23045012

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10177, 20354, 40708, 50885, 101770, 203540, 1027877, 2055754, 4111508, 5139385, 10278770, 20557540]

約数ペア:

[(1, 20557540), (2, 10278770), (4, 5139385), (5, 4111508), (10, 2055754), (20, 1027877), (101, 203540), (202, 101770), (404, 50885), (505, 40708), (1010, 20354), (2020, 10177)]