18728721

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1361}}^1$

素因数の和:1517

約数の個数: 24

約数和(自身を含む): 29746080

約数和(自身を除く): 11017359

約数列:

[1, 3, 9, 11, 33, 99, 139, 417, 1251, 1361, 1529, 4083, 4587, 12249, 13761, 14971, 44913, 134739, 189179, 567537, 1702611, 2080969, 6242907, 18728721]

約数ペア:

[(1, 18728721), (3, 6242907), (9, 2080969), (11, 1702611), (33, 567537), (99, 189179), (139, 134739), (417, 44913), (1251, 14971), (1361, 13761), (1529, 12249), (4083, 4587)]