18405020

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{2903}}^1$

素因数の和:3229

約数の個数: 24

約数和(自身を含む): 38785824

約数和(自身を除く): 20380804

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 2903, 3170, 5806, 6340, 11612, 14515, 29030, 58060, 920251, 1840502, 3681004, 4601255, 9202510, 18405020]

約数ペア:

[(1, 18405020), (2, 9202510), (4, 4601255), (5, 3681004), (10, 1840502), (20, 920251), (317, 58060), (634, 29030), (1268, 14515), (1585, 11612), (2903, 6340), (3170, 5806)]