19404080

素因数分解:

$2^4\times 5^1\times {\mathrm{242551}}^1$

素因数の和:242564

約数の個数: 20

約数和(自身を含む): 45114672

約数和(自身を除く): 25710592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242551, 485102, 970204, 1212755, 1940408, 2425510, 3880816, 4851020, 9702040, 19404080]

約数ペア:

[(1, 19404080), (2, 9702040), (4, 4851020), (5, 3880816), (8, 2425510), (10, 1940408), (16, 1212755), (20, 970204), (40, 485102), (80, 242551)]