20513759

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{727}}^1$

素因数の和:902

約数の個数: 16

約数和(自身を含む): 24460800

約数和(自身を除く): 3947041

約数列:

[1, 7, 29, 139, 203, 727, 973, 4031, 5089, 21083, 28217, 101053, 147581, 707371, 2930537, 20513759]

約数ペア:

[(1, 20513759), (7, 2930537), (29, 707371), (139, 147581), (203, 101053), (727, 28217), (973, 21083), (4031, 5089)]