81948910

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{115421}}^1$

素因数の和:115499

約数の個数: 16

約数和(自身を含む): 149586912

約数和(自身を除く): 67638002

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 115421, 230842, 577105, 1154210, 8194891, 16389782, 40974455, 81948910]

約数ペア:

[(1, 81948910), (2, 40974455), (5, 16389782), (10, 8194891), (71, 1154210), (142, 577105), (355, 230842), (710, 115421)]