21113755

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2371}}^1$

素因数の和:2526

約数の個数: 16

約数和(自身を含む): 27496224

約数和(自身を除く): 6382469

約数列:

[1, 5, 13, 65, 137, 685, 1781, 2371, 8905, 11855, 30823, 154115, 324827, 1624135, 4222751, 21113755]

約数ペア:

[(1, 21113755), (5, 4222751), (13, 1624135), (65, 324827), (137, 154115), (685, 30823), (1781, 11855), (2371, 8905)]