19491620

素因数分解:

$2^2\times 5^1\times {\mathrm{974581}}^1$

素因数の和:974590

約数の個数: 12

約数和(自身を含む): 40932444

約数和(自身を除く): 21440824

約数列:

[1, 2, 4, 5, 10, 20, 974581, 1949162, 3898324, 4872905, 9745810, 19491620]

約数ペア:

[(1, 19491620), (2, 9745810), (4, 4872905), (5, 3898324), (10, 1949162), (20, 974581)]