19663820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89381}}^1$

素因数の和:89401

約数の個数: 24

約数和(自身を含む): 45048528

約数和(自身を除く): 25384708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 89381, 178762, 357524, 446905, 893810, 983191, 1787620, 1966382, 3932764, 4915955, 9831910, 19663820]

約数ペア:

[(1, 19663820), (2, 9831910), (4, 4915955), (5, 3932764), (10, 1966382), (11, 1787620), (20, 983191), (22, 893810), (44, 446905), (55, 357524), (110, 178762), (220, 89381)]