28108521

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{2579}}^1$

素因数の和:2765

約数の個数: 24

約数和(自身を含む): 46687680

約数和(自身を除く): 18579159

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 2579, 3633, 7737, 10899, 18053, 23211, 54159, 162477, 446167, 1338501, 3123169, 4015503, 9369507, 28108521]

約数ペア:

[(1, 28108521), (3, 9369507), (7, 4015503), (9, 3123169), (21, 1338501), (63, 446167), (173, 162477), (519, 54159), (1211, 23211), (1557, 18053), (2579, 10899), (3633, 7737)]