20681507

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6551}}^1$

素因数の和:6610

約数の個数: 16

約数和(自身を含む): 26417664

約数和(自身を除く): 5736157

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6551, 45857, 72061, 268591, 504427, 1880137, 2954501, 20681507]

約数ペア:

[(1, 20681507), (7, 2954501), (11, 1880137), (41, 504427), (77, 268591), (287, 72061), (451, 45857), (3157, 6551)]