28890155

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3187}}^1$

素因数の和:3243

約数の個数: 24

約数和(自身を含む): 41431248

約数和(自身を除く): 12541093

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 3187, 9065, 15935, 22309, 111545, 117919, 156163, 589595, 780815, 825433, 4127165, 5778031, 28890155]

約数ペア:

[(1, 28890155), (5, 5778031), (7, 4127165), (35, 825433), (37, 780815), (49, 589595), (185, 156163), (245, 117919), (259, 111545), (1295, 22309), (1813, 15935), (3187, 9065)]