21759020

素因数分解:

$2^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{2011}}^1$

素因数の和:2561

約数の個数: 24

約数和(自身を含む): 45801168

約数和(自身を除く): 24042148

約数列:

[1, 2, 4, 5, 10, 20, 541, 1082, 2011, 2164, 2705, 4022, 5410, 8044, 10055, 10820, 20110, 40220, 1087951, 2175902, 4351804, 5439755, 10879510, 21759020]

約数ペア:

[(1, 21759020), (2, 10879510), (4, 5439755), (5, 4351804), (10, 2175902), (20, 1087951), (541, 40220), (1082, 20110), (2011, 10820), (2164, 10055), (2705, 8044), (4022, 5410)]