28104489

素因数分解:

$3^4\times 7^2\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:196

約数の個数: 60

約数和(自身を含む): 50017044

約数和(自身を除く): 21912555

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 73, 81, 97, 147, 189, 219, 291, 441, 511, 567, 657, 679, 873, 1323, 1533, 1971, 2037, 2619, 3577, 3969, 4599, 4753, 5913, 6111, 7081, 7857, 10731, 13797, 14259, 18333, 21243, 32193, 41391, 42777, 49567, 54999, 63729, 96579, 128331, 148701, 191187, 289737, 346969, 384993, 446103, 573561, 1040907, 1338309, 3122721, 4014927, 9368163, 28104489]

約数ペア:

[(1, 28104489), (3, 9368163), (7, 4014927), (9, 3122721), (21, 1338309), (27, 1040907), (49, 573561), (63, 446103), (73, 384993), (81, 346969), (97, 289737), (147, 191187), (189, 148701), (219, 128331), (291, 96579), (441, 63729), (511, 54999), (567, 49567), (657, 42777), (679, 41391), (873, 32193), (1323, 21243), (1533, 18333), (1971, 14259), (2037, 13797), (2619, 10731), (3577, 7857), (3969, 7081), (4599, 6111), (4753, 5913)]