393842980

素因数分解:

$2^2\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{9851}}^1$

素因数の和:11859

約数の個数: 24

約数和(自身を含む): 827568000

約数和(自身を除く): 433725020

約数列:

[1, 2, 4, 5, 10, 20, 1999, 3998, 7996, 9851, 9995, 19702, 19990, 39404, 39980, 49255, 98510, 197020, 19692149, 39384298, 78768596, 98460745, 196921490, 393842980]

約数ペア:

[(1, 393842980), (2, 196921490), (4, 98460745), (5, 78768596), (10, 39384298), (20, 19692149), (1999, 197020), (3998, 98510), (7996, 49255), (9851, 39980), (9995, 39404), (19702, 19990)]