21860780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37691}}^1$

素因数の和:37729

約数の個数: 24

約数和(自身を含む): 47491920

約数和(自身を除く): 25631140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37691, 75382, 150764, 188455, 376910, 753820, 1093039, 2186078, 4372156, 5465195, 10930390, 21860780]

約数ペア:

[(1, 21860780), (2, 10930390), (4, 5465195), (5, 4372156), (10, 2186078), (20, 1093039), (29, 753820), (58, 376910), (116, 188455), (145, 150764), (290, 75382), (580, 37691)]