201021121

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{571}}^1\times {\mathrm{2647}}^1$

素因数の和:3244

約数の個数: 16

約数和(自身を含む): 242344960

約数和(自身を除く): 41323839

約数列:

[1, 7, 19, 133, 571, 2647, 3997, 10849, 18529, 50293, 75943, 352051, 1511437, 10580059, 28717303, 201021121]

約数ペア:

[(1, 201021121), (7, 28717303), (19, 10580059), (133, 1511437), (571, 352051), (2647, 75943), (3997, 50293), (10849, 18529)]