20642765

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28871}}^1$

素因数の和:28900

約数の個数: 16

約数和(自身を含む): 29102976

約数和(自身を除く): 8460211

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28871, 144355, 317581, 375323, 1587905, 1876615, 4128553, 20642765]

約数ペア:

[(1, 20642765), (5, 4128553), (11, 1876615), (13, 1587905), (55, 375323), (65, 317581), (143, 144355), (715, 28871)]