28877905

素因数分解:

$5^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{379}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 40547520

約数和(自身を除く): 11669615

約数列:

[1, 5, 7, 35, 49, 245, 311, 379, 1555, 1895, 2177, 2653, 10885, 13265, 15239, 18571, 76195, 92855, 117869, 589345, 825083, 4125415, 5775581, 28877905]

約数ペア:

[(1, 28877905), (5, 5775581), (7, 4125415), (35, 825083), (49, 589345), (245, 117869), (311, 92855), (379, 76195), (1555, 18571), (1895, 15239), (2177, 13265), (2653, 10885)]