21854231

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{1783}}^1$

素因数の和:1910

約数の個数: 16

約数和(自身を含む): 26717184

約数和(自身を除く): 4862953

約数列:

[1, 7, 17, 103, 119, 721, 1751, 1783, 12257, 12481, 30311, 183649, 212177, 1285543, 3122033, 21854231]

約数ペア:

[(1, 21854231), (7, 3122033), (17, 1285543), (103, 212177), (119, 183649), (721, 30311), (1751, 12481), (1783, 12257)]