19553840

素因数分解:

$2^4\times 5^1\times {\mathrm{244423}}^1$

素因数の和:244436

約数の個数: 20

約数和(自身を含む): 45462864

約数和(自身を除く): 25909024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244423, 488846, 977692, 1222115, 1955384, 2444230, 3910768, 4888460, 9776920, 19553840]

約数ペア:

[(1, 19553840), (2, 9776920), (4, 4888460), (5, 3910768), (8, 2444230), (10, 1955384), (16, 1222115), (20, 977692), (40, 488846), (80, 244423)]