20564540

素因数分解:

$2^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{2713}}^1$

素因数の和:3101

約数の個数: 24

約数和(自身を含む): 43315440

約数和(自身を除く): 22750900

約数列:

[1, 2, 4, 5, 10, 20, 379, 758, 1516, 1895, 2713, 3790, 5426, 7580, 10852, 13565, 27130, 54260, 1028227, 2056454, 4112908, 5141135, 10282270, 20564540]

約数ペア:

[(1, 20564540), (2, 10282270), (4, 5141135), (5, 4112908), (10, 2056454), (20, 1028227), (379, 54260), (758, 27130), (1516, 13565), (1895, 10852), (2713, 7580), (3790, 5426)]