28338905

素因数分解:

$5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1123}}^1$

素因数の和:1245

約数の個数: 24

約数和(自身を含む): 39978432

約数和(自身を除く): 11639527

約数列:

[1, 5, 7, 35, 49, 103, 245, 515, 721, 1123, 3605, 5047, 5615, 7861, 25235, 39305, 55027, 115669, 275135, 578345, 809683, 4048415, 5667781, 28338905]

約数ペア:

[(1, 28338905), (5, 5667781), (7, 4048415), (35, 809683), (49, 578345), (103, 275135), (245, 115669), (515, 55027), (721, 39305), (1123, 25235), (3605, 7861), (5047, 5615)]