258090620

素因数分解:

$2^2\times 5^1\times {\mathrm{12904531}}^1$

素因数の和:12904540

約数の個数: 12

約数和(自身を含む): 541990344

約数和(自身を除く): 283899724

約数列:

[1, 2, 4, 5, 10, 20, 12904531, 25809062, 51618124, 64522655, 129045310, 258090620]

約数ペア:

[(1, 258090620), (2, 129045310), (4, 64522655), (5, 51618124), (10, 25809062), (20, 12904531)]