18720580

素因数分解:

$2^2\times 5^1\times {\mathrm{936029}}^1$

素因数の和:936038

約数の個数: 12

約数和(自身を含む): 39313260

約数和(自身を除く): 20592680

約数列:

[1, 2, 4, 5, 10, 20, 936029, 1872058, 3744116, 4680145, 9360290, 18720580]

約数ペア:

[(1, 18720580), (2, 9360290), (4, 4680145), (5, 3744116), (10, 1872058), (20, 936029)]