20959839

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{32801}}^1$

素因数の和:32878

約数の個数: 12

約数和(自身を含む): 30702672

約数和(自身を除く): 9742833

約数列:

[1, 3, 9, 71, 213, 639, 32801, 98403, 295209, 2328871, 6986613, 20959839]

約数ペア:

[(1, 20959839), (3, 6986613), (9, 2328871), (71, 295209), (213, 98403), (639, 32801)]