28512939

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 23096661

約数列:

[1, 3, 7, 13, 19, 21, 23, 39, 57, 69, 91, 133, 161, 239, 247, 273, 299, 399, 437, 483, 717, 741, 897, 1311, 1673, 1729, 2093, 3059, 3107, 4541, 5019, 5187, 5497, 5681, 6279, 9177, 9321, 13623, 16491, 17043, 21749, 31787, 38479, 39767, 59033, 65247, 71461, 95361, 104443, 115437, 119301, 177099, 214383, 313329, 413231, 500227, 731101, 1239693, 1357759, 1500681, 2193303, 4073277, 9504313, 28512939]

約数ペア:

[(1, 28512939), (3, 9504313), (7, 4073277), (13, 2193303), (19, 1500681), (21, 1357759), (23, 1239693), (39, 731101), (57, 500227), (69, 413231), (91, 313329), (133, 214383), (161, 177099), (239, 119301), (247, 115437), (273, 104443), (299, 95361), (399, 71461), (437, 65247), (483, 59033), (717, 39767), (741, 38479), (897, 31787), (1311, 21749), (1673, 17043), (1729, 16491), (2093, 13623), (3059, 9321), (3107, 9177), (4541, 6279), (5019, 5681), (5187, 5497)]