81427505

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{3719}}^1$

素因数の和:3904

約数の個数: 16

約数和(自身を含む): 101779200

約数和(自身を除く): 20351695

約数列:

[1, 5, 29, 145, 151, 755, 3719, 4379, 18595, 21895, 107851, 539255, 561569, 2807845, 16285501, 81427505]

約数ペア:

[(1, 81427505), (5, 16285501), (29, 2807845), (145, 561569), (151, 539255), (755, 107851), (3719, 21895), (4379, 18595)]