21718510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197441}}^1$

素因数の和:197459

約数の個数: 16

約数和(自身を含む): 42647472

約数和(自身を除く): 20928962

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197441, 394882, 987205, 1974410, 2171851, 4343702, 10859255, 21718510]

約数ペア:

[(1, 21718510), (2, 10859255), (5, 4343702), (10, 2171851), (11, 1974410), (22, 987205), (55, 394882), (110, 197441)]