20518239

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{26407}}^1$

素因数の和:26454

約数の個数: 16

約数和(自身を含む): 32112128

約数和(自身を除く): 11593889

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 26407, 79221, 184849, 554547, 977059, 2931177, 6839413, 20518239]

約数ペア:

[(1, 20518239), (3, 6839413), (7, 2931177), (21, 977059), (37, 554547), (111, 184849), (259, 79221), (777, 26407)]