12981075121

素因数分解:

$7^1\times {\mathrm{2903}}^1\times {\mathrm{638801}}^1$

素因数の和:641711

約数の個数: 8

約数和(自身を含む): 14840648064

約数和(自身を除く): 1859572943

約数列:

[1, 7, 2903, 20321, 638801, 4471607, 1854439303, 12981075121]

約数ペア:

[(1, 12981075121), (7, 1854439303), (2903, 4471607), (20321, 638801)]