28685727

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2243}}^1$

素因数の和:2292

約数の個数: 36

約数和(自身を含む): 49884120

約数和(自身を除く): 21198393

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1827, 2243, 4263, 6729, 12789, 15701, 20187, 47103, 65047, 109907, 141309, 195141, 329721, 455329, 585423, 989163, 1365987, 3187303, 4097961, 9561909, 28685727]

約数ペア:

[(1, 28685727), (3, 9561909), (7, 4097961), (9, 3187303), (21, 1365987), (29, 989163), (49, 585423), (63, 455329), (87, 329721), (147, 195141), (203, 141309), (261, 109907), (441, 65047), (609, 47103), (1421, 20187), (1827, 15701), (2243, 12789), (4263, 6729)]