19223420

素因数分解:

$2^2\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1091}}^1$

素因数の和:1981

約数の個数: 24

約数和(自身を含む): 40452048

約数和(自身を除く): 21228628

約数列:

[1, 2, 4, 5, 10, 20, 881, 1091, 1762, 2182, 3524, 4364, 4405, 5455, 8810, 10910, 17620, 21820, 961171, 1922342, 3844684, 4805855, 9611710, 19223420]

約数ペア:

[(1, 19223420), (2, 9611710), (4, 4805855), (5, 3844684), (10, 1922342), (20, 961171), (881, 21820), (1091, 17620), (1762, 10910), (2182, 8810), (3524, 5455), (4364, 4405)]