20517861

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4421}}^1$

素因数の和:4461

約数の個数: 32

約数和(自身を含む): 35659008

約数和(自身を除く): 15141147

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4421, 4641, 13263, 30947, 57473, 75157, 92841, 172419, 225471, 402311, 526099, 977041, 1206933, 1578297, 2931123, 6839287, 20517861]

約数ペア:

[(1, 20517861), (3, 6839287), (7, 2931123), (13, 1578297), (17, 1206933), (21, 977041), (39, 526099), (51, 402311), (91, 225471), (119, 172419), (221, 92841), (273, 75157), (357, 57473), (663, 30947), (1547, 13263), (4421, 4641)]