28160888

素因数分解:

$2^3\times 7^2\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 65151000

約数和(自身を除く): 36990112

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 49, 56, 76, 98, 133, 152, 196, 199, 266, 361, 392, 398, 532, 722, 796, 931, 1064, 1393, 1444, 1592, 1862, 2527, 2786, 2888, 3724, 3781, 5054, 5572, 7448, 7562, 9751, 10108, 11144, 15124, 17689, 19502, 20216, 26467, 30248, 35378, 39004, 52934, 70756, 71839, 78008, 105868, 141512, 143678, 185269, 211736, 287356, 370538, 502873, 574712, 741076, 1005746, 1482152, 2011492, 3520111, 4022984, 7040222, 14080444, 28160888]

約数ペア:

[(1, 28160888), (2, 14080444), (4, 7040222), (7, 4022984), (8, 3520111), (14, 2011492), (19, 1482152), (28, 1005746), (38, 741076), (49, 574712), (56, 502873), (76, 370538), (98, 287356), (133, 211736), (152, 185269), (196, 143678), (199, 141512), (266, 105868), (361, 78008), (392, 71839), (398, 70756), (532, 52934), (722, 39004), (796, 35378), (931, 30248), (1064, 26467), (1393, 20216), (1444, 19502), (1592, 17689), (1862, 15124), (2527, 11144), (2786, 10108), (2888, 9751), (3724, 7562), (3781, 7448), (5054, 5572)]