19795420

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2351}}^1$

素因数の和:2781

約数の個数: 24

約数和(自身を含む): 41686848

約数和(自身を除く): 21891428

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 2351, 4210, 4702, 8420, 9404, 11755, 23510, 47020, 989771, 1979542, 3959084, 4948855, 9897710, 19795420]

約数ペア:

[(1, 19795420), (2, 9897710), (4, 4948855), (5, 3959084), (10, 1979542), (20, 989771), (421, 47020), (842, 23510), (1684, 11755), (2105, 9404), (2351, 8420), (4210, 4702)]