28490355

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 51184224

約数和(自身を除く): 22693869

約数列:

[1, 3, 5, 9, 15, 45, 61, 97, 107, 183, 291, 305, 321, 485, 535, 549, 873, 915, 963, 1455, 1605, 2745, 4365, 4815, 5917, 6527, 10379, 17751, 19581, 29585, 31137, 32635, 51895, 53253, 58743, 88755, 93411, 97905, 155685, 266265, 293715, 467055, 633119, 1899357, 3165595, 5698071, 9496785, 28490355]

約数ペア:

[(1, 28490355), (3, 9496785), (5, 5698071), (9, 3165595), (15, 1899357), (45, 633119), (61, 467055), (97, 293715), (107, 266265), (183, 155685), (291, 97905), (305, 93411), (321, 88755), (485, 58743), (535, 53253), (549, 51895), (873, 32635), (915, 31137), (963, 29585), (1455, 19581), (1605, 17751), (2745, 10379), (4365, 6527), (4815, 5917)]