18139820

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5011}}^1$

素因数の和:5201

約数の個数: 24

約数和(自身を含む): 38311728

約数和(自身を除く): 20171908

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5011, 10022, 20044, 25055, 50110, 100220, 906991, 1813982, 3627964, 4534955, 9069910, 18139820]

約数ペア:

[(1, 18139820), (2, 9069910), (4, 4534955), (5, 3627964), (10, 1813982), (20, 906991), (181, 100220), (362, 50110), (724, 25055), (905, 20044), (1810, 10022), (3620, 5011)]