81268628

素因数分解:

$2^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{4391}}^1$

素因数の和:5063

約数の個数: 24

約数和(自身を含む): 162820224

約数和(自身を除く): 81551596

約数列:

[1, 2, 4, 7, 14, 28, 661, 1322, 2644, 4391, 4627, 8782, 9254, 17564, 18508, 30737, 61474, 122948, 2902451, 5804902, 11609804, 20317157, 40634314, 81268628]

約数ペア:

[(1, 81268628), (2, 40634314), (4, 20317157), (7, 11609804), (14, 5804902), (28, 2902451), (661, 122948), (1322, 61474), (2644, 30737), (4391, 18508), (4627, 17564), (8782, 9254)]