21810940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{14939}}^1$

素因数の和:15021

約数の個数: 24

約数和(自身を含む): 46433520

約数和(自身を除く): 24622580

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 14939, 29878, 59756, 74695, 149390, 298780, 1090547, 2181094, 4362188, 5452735, 10905470, 21810940]

約数ペア:

[(1, 21810940), (2, 10905470), (4, 5452735), (5, 4362188), (10, 2181094), (20, 1090547), (73, 298780), (146, 149390), (292, 74695), (365, 59756), (730, 29878), (1460, 14939)]