20808220165

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{985471}}^1$

素因数の和:985620

約数の個数: 16

約数和(自身を含む): 25827250176

約数和(自身を除く): 5019030011

約数列:

[1, 5, 41, 103, 205, 515, 4223, 21115, 985471, 4927355, 40404311, 101503513, 202021555, 507517565, 4161644033, 20808220165]

約数ペア:

[(1, 20808220165), (5, 4161644033), (41, 507517565), (103, 202021555), (205, 101503513), (515, 40404311), (4223, 4927355), (21115, 985471)]