19896440

素因数分解:

$2^3\times 5^1\times {\mathrm{497411}}^1$

素因数の和:497422

約数の個数: 16

約数和(自身を含む): 44767080

約数和(自身を除く): 24870640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497411, 994822, 1989644, 2487055, 3979288, 4974110, 9948220, 19896440]

約数ペア:

[(1, 19896440), (2, 9948220), (4, 4974110), (5, 3979288), (8, 2487055), (10, 1989644), (20, 994822), (40, 497411)]