28128149

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 8367211

約数列:

[1, 7, 17, 23, 43, 119, 161, 239, 301, 391, 731, 989, 1673, 2737, 4063, 5117, 5497, 6923, 10277, 16813, 28441, 38479, 71939, 93449, 117691, 174709, 236371, 654143, 1222963, 1654597, 4018307, 28128149]

約数ペア:

[(1, 28128149), (7, 4018307), (17, 1654597), (23, 1222963), (43, 654143), (119, 236371), (161, 174709), (239, 117691), (301, 93449), (391, 71939), (731, 38479), (989, 28441), (1673, 16813), (2737, 10277), (4063, 6923), (5117, 5497)]