28071561

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{4441}}^1$

素因数の和:4501

約数の個数: 24

約数和(自身を含む): 44562144

約数和(自身を除く): 16490583

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 4441, 6321, 13323, 31087, 93261, 190963, 217609, 572889, 652827, 1336741, 4010223, 9357187, 28071561]

約数ペア:

[(1, 28071561), (3, 9357187), (7, 4010223), (21, 1336741), (43, 652827), (49, 572889), (129, 217609), (147, 190963), (301, 93261), (903, 31087), (2107, 13323), (4441, 6321)]