20481800

素因数分解:

$2^3\times 5^2\times {\mathrm{102409}}^1$

素因数の和:102425

約数の個数: 24

約数和(自身を含む): 47620650

約数和(自身を除く): 27138850

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 102409, 204818, 409636, 512045, 819272, 1024090, 2048180, 2560225, 4096360, 5120450, 10240900, 20481800]

約数ペア:

[(1, 20481800), (2, 10240900), (4, 5120450), (5, 4096360), (8, 2560225), (10, 2048180), (20, 1024090), (25, 819272), (40, 512045), (50, 409636), (100, 204818), (200, 102409)]