20947213

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{1709}}^1$

素因数の和:1836

約数の個数: 16

約数和(自身を含む): 25608960

約数和(自身を除く): 4661747

約数列:

[1, 7, 17, 103, 119, 721, 1709, 1751, 11963, 12257, 29053, 176027, 203371, 1232189, 2992459, 20947213]

約数ペア:

[(1, 20947213), (7, 2992459), (17, 1232189), (103, 203371), (119, 176027), (721, 29053), (1709, 12257), (1751, 11963)]