20809755

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11279}}^1$

素因数の和:11331

約数の個数: 24

約数和(自身を含む): 36953280

約数和(自身を除く): 16143525

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 11279, 33837, 56395, 101511, 169185, 462439, 507555, 1387317, 2312195, 4161951, 6936585, 20809755]

約数ペア:

[(1, 20809755), (3, 6936585), (5, 4161951), (9, 2312195), (15, 1387317), (41, 507555), (45, 462439), (123, 169185), (205, 101511), (369, 56395), (615, 33837), (1845, 11279)]