21180620

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5851}}^1$

素因数の和:6041

約数の個数: 24

約数和(自身を含む): 44732688

約数和(自身を除く): 23552068

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5851, 11702, 23404, 29255, 58510, 117020, 1059031, 2118062, 4236124, 5295155, 10590310, 21180620]

約数ペア:

[(1, 21180620), (2, 10590310), (4, 5295155), (5, 4236124), (10, 2118062), (20, 1059031), (181, 117020), (362, 58510), (724, 29255), (905, 23404), (1810, 11702), (3620, 5851)]