51438820

素因数分解:

$2^2\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{2549}}^1$

素因数の和:3567

約数の個数: 24

約数和(自身を含む): 108171000

約数和(自身を除く): 56732180

約数列:

[1, 2, 4, 5, 10, 20, 1009, 2018, 2549, 4036, 5045, 5098, 10090, 10196, 12745, 20180, 25490, 50980, 2571941, 5143882, 10287764, 12859705, 25719410, 51438820]

約数ペア:

[(1, 51438820), (2, 25719410), (4, 12859705), (5, 10287764), (10, 5143882), (20, 2571941), (1009, 50980), (2018, 25490), (2549, 20180), (4036, 12745), (5045, 10196), (5098, 10090)]