21857620

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2467}}^1$

素因数の和:2919

約数の個数: 24

約数和(自身を含む): 46023264

約数和(自身を除く): 24165644

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 2467, 4430, 4934, 8860, 9868, 12335, 24670, 49340, 1092881, 2185762, 4371524, 5464405, 10928810, 21857620]

約数ペア:

[(1, 21857620), (2, 10928810), (4, 5464405), (5, 4371524), (10, 2185762), (20, 1092881), (443, 49340), (886, 24670), (1772, 12335), (2215, 9868), (2467, 8860), (4430, 4934)]