18809020

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1361}}^1$

素因数の和:2061

約数の個数: 24

約数和(自身を含む): 39585168

約数和(自身を除く): 20776148

約数列:

[1, 2, 4, 5, 10, 20, 691, 1361, 1382, 2722, 2764, 3455, 5444, 6805, 6910, 13610, 13820, 27220, 940451, 1880902, 3761804, 4702255, 9404510, 18809020]

約数ペア:

[(1, 18809020), (2, 9404510), (4, 4702255), (5, 3761804), (10, 1880902), (20, 940451), (691, 27220), (1361, 13820), (1382, 13610), (2722, 6910), (2764, 6805), (3455, 5444)]