19017020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86441}}^1$

素因数の和:86461

約数の個数: 24

約数和(自身を含む): 43566768

約数和(自身を除く): 24549748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86441, 172882, 345764, 432205, 864410, 950851, 1728820, 1901702, 3803404, 4754255, 9508510, 19017020]

約数ペア:

[(1, 19017020), (2, 9508510), (4, 4754255), (5, 3803404), (10, 1901702), (11, 1728820), (20, 950851), (22, 864410), (44, 432205), (55, 345764), (110, 172882), (220, 86441)]