80556440

素因数分解:

$2^3\times 5^1\times {\mathrm{2013911}}^1$

素因数の和:2013922

約数の個数: 16

約数和(自身を含む): 181252080

約数和(自身を除く): 100695640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2013911, 4027822, 8055644, 10069555, 16111288, 20139110, 40278220, 80556440]

約数ペア:

[(1, 80556440), (2, 40278220), (4, 20139110), (5, 16111288), (8, 10069555), (10, 8055644), (20, 4027822), (40, 2013911)]