19179820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87181}}^1$

素因数の和:87201

約数の個数: 24

約数和(自身を含む): 43939728

約数和(自身を除く): 24759908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87181, 174362, 348724, 435905, 871810, 958991, 1743620, 1917982, 3835964, 4794955, 9589910, 19179820]

約数ペア:

[(1, 19179820), (2, 9589910), (4, 4794955), (5, 3835964), (10, 1917982), (11, 1743620), (20, 958991), (22, 871810), (44, 435905), (55, 348724), (110, 174362), (220, 87181)]