261657020

素因数分解:

$2^2\times 5^1\times {\mathrm{3371}}^1\times {\mathrm{3881}}^1$

素因数の和:7261

約数の個数: 24

約数和(自身を含む): 549784368

約数和(自身を除く): 288127348

約数列:

[1, 2, 4, 5, 10, 20, 3371, 3881, 6742, 7762, 13484, 15524, 16855, 19405, 33710, 38810, 67420, 77620, 13082851, 26165702, 52331404, 65414255, 130828510, 261657020]

約数ペア:

[(1, 261657020), (2, 130828510), (4, 65414255), (5, 52331404), (10, 26165702), (20, 13082851), (3371, 77620), (3881, 67420), (6742, 38810), (7762, 33710), (13484, 19405), (15524, 16855)]