281131205

素因数分解:

$5^1\times {\mathrm{43}}^2\times {\mathrm{47}}^1\times {\mathrm{647}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 353279232

約数和(自身を除く): 72148027

約数列:

[1, 5, 43, 47, 215, 235, 647, 1849, 2021, 3235, 9245, 10105, 27821, 30409, 86903, 139105, 152045, 434515, 1196303, 1307587, 5981515, 6537935, 56226241, 281131205]

約数ペア:

[(1, 281131205), (5, 56226241), (43, 6537935), (47, 5981515), (215, 1307587), (235, 1196303), (647, 434515), (1849, 152045), (2021, 139105), (3235, 86903), (9245, 30409), (10105, 27821)]