20239820

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1531}}^1$

素因数の和:2201

約数の個数: 24

約数和(自身を含む): 42595728

約数和(自身を除く): 22355908

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 1531, 2644, 3062, 3305, 6124, 6610, 7655, 13220, 15310, 30620, 1011991, 2023982, 4047964, 5059955, 10119910, 20239820]

約数ペア:

[(1, 20239820), (2, 10119910), (4, 5059955), (5, 4047964), (10, 2023982), (20, 1011991), (661, 30620), (1322, 15310), (1531, 13220), (2644, 7655), (3062, 6610), (3305, 6124)]