28512805

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 34898688

約数和(自身を除く): 6385883

約数列:

[1, 5, 101, 131, 431, 505, 655, 2155, 13231, 43531, 56461, 66155, 217655, 282305, 5702561, 28512805]

約数ペア:

[(1, 28512805), (5, 5702561), (101, 282305), (131, 217655), (431, 66155), (505, 56461), (655, 43531), (2155, 13231)]