28715589

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 49573888

約数和(自身を除く): 20858299

約数列:

[1, 3, 7, 9, 21, 37, 63, 97, 111, 127, 259, 291, 333, 381, 679, 777, 873, 889, 1143, 2037, 2331, 2667, 3589, 4699, 6111, 8001, 10767, 12319, 14097, 25123, 32301, 32893, 36957, 42291, 75369, 86233, 98679, 110871, 226107, 258699, 296037, 455803, 776097, 1367409, 3190621, 4102227, 9571863, 28715589]

約数ペア:

[(1, 28715589), (3, 9571863), (7, 4102227), (9, 3190621), (21, 1367409), (37, 776097), (63, 455803), (97, 296037), (111, 258699), (127, 226107), (259, 110871), (291, 98679), (333, 86233), (381, 75369), (679, 42291), (777, 36957), (873, 32893), (889, 32301), (1143, 25123), (2037, 14097), (2331, 12319), (2667, 10767), (3589, 8001), (4699, 6111)]