28528479

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{10531}}^1$

素因数の和:10587

約数の個数: 24

約数和(自身を含む): 48194432

約数和(自身を除く): 19665953

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 10531, 31593, 73717, 94779, 221151, 452833, 663453, 1358499, 3169831, 4075497, 9509493, 28528479]

約数ペア:

[(1, 28528479), (3, 9509493), (7, 4075497), (9, 3169831), (21, 1358499), (43, 663453), (63, 452833), (129, 221151), (301, 94779), (387, 73717), (903, 31593), (2709, 10531)]