20890475

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{19433}}^1$

素因数の和:19486

約数の個数: 12

約数和(自身を含む): 26507976

約数和(自身を除く): 5617501

約数列:

[1, 5, 25, 43, 215, 1075, 19433, 97165, 485825, 835619, 4178095, 20890475]

約数ペア:

[(1, 20890475), (5, 4178095), (25, 835619), (43, 485825), (215, 97165), (1075, 19433)]