81125180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139871}}^1$

素因数の和:139909

約数の個数: 24

約数和(自身を含む): 176238720

約数和(自身を除く): 95113540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 139871, 279742, 559484, 699355, 1398710, 2797420, 4056259, 8112518, 16225036, 20281295, 40562590, 81125180]

約数ペア:

[(1, 81125180), (2, 40562590), (4, 20281295), (5, 16225036), (10, 8112518), (20, 4056259), (29, 2797420), (58, 1398710), (116, 699355), (145, 559484), (290, 279742), (580, 139871)]