20179793090

素因数分解:

$2^1\times 5^1\times {\mathrm{12781}}^1\times {\mathrm{157889}}^1$

素因数の和:170677

約数の個数: 16

約数和(自身を含む): 36326699640

約数和(自身を除く): 16146906550

約数列:

[1, 2, 5, 10, 12781, 25562, 63905, 127810, 157889, 315778, 789445, 1578890, 2017979309, 4035958618, 10089896545, 20179793090]

約数ペア:

[(1, 20179793090), (2, 10089896545), (5, 4035958618), (10, 2017979309), (12781, 1578890), (25562, 789445), (63905, 315778), (127810, 157889)]