281608880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:264

約数の個数: 180

約数和(自身を含む): 807872400

約数和(自身を除く): 526263520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 190, 196, 199, 245, 266, 280, 304, 361, 380, 392, 398, 490, 532, 560, 665, 722, 760, 784, 796, 931, 980, 995, 1064, 1330, 1393, 1444, 1520, 1592, 1805, 1862, 1960, 1990, 2128, 2527, 2660, 2786, 2888, 3184, 3610, 3724, 3781, 3920, 3980, 4655, 5054, 5320, 5572, 5776, 6965, 7220, 7448, 7562, 7960, 9310, 9751, 10108, 10640, 11144, 12635, 13930, 14440, 14896, 15124, 15920, 17689, 18620, 18905, 19502, 20216, 22288, 25270, 26467, 27860, 28880, 30248, 35378, 37240, 37810, 39004, 40432, 48755, 50540, 52934, 55720, 60496, 70756, 71839, 74480, 75620, 78008, 88445, 97510, 101080, 105868, 111440, 132335, 141512, 143678, 151240, 156016, 176890, 185269, 195020, 202160, 211736, 264670, 283024, 287356, 302480, 353780, 359195, 370538, 390040, 423472, 502873, 529340, 574712, 707560, 718390, 741076, 780080, 926345, 1005746, 1058680, 1149424, 1415120, 1436780, 1482152, 1852690, 2011492, 2117360, 2514365, 2873560, 2964304, 3520111, 3705380, 4022984, 5028730, 5747120, 7040222, 7410760, 8045968, 10057460, 14080444, 14821520, 17600555, 20114920, 28160888, 35201110, 40229840, 56321776, 70402220, 140804440, 281608880]

約数ペア:

[(1, 281608880), (2, 140804440), (4, 70402220), (5, 56321776), (7, 40229840), (8, 35201110), (10, 28160888), (14, 20114920), (16, 17600555), (19, 14821520), (20, 14080444), (28, 10057460), (35, 8045968), (38, 7410760), (40, 7040222), (49, 5747120), (56, 5028730), (70, 4022984), (76, 3705380), (80, 3520111), (95, 2964304), (98, 2873560), (112, 2514365), (133, 2117360), (140, 2011492), (152, 1852690), (190, 1482152), (196, 1436780), (199, 1415120), (245, 1149424), (266, 1058680), (280, 1005746), (304, 926345), (361, 780080), (380, 741076), (392, 718390), (398, 707560), (490, 574712), (532, 529340), (560, 502873), (665, 423472), (722, 390040), (760, 370538), (784, 359195), (796, 353780), (931, 302480), (980, 287356), (995, 283024), (1064, 264670), (1330, 211736), (1393, 202160), (1444, 195020), (1520, 185269), (1592, 176890), (1805, 156016), (1862, 151240), (1960, 143678), (1990, 141512), (2128, 132335), (2527, 111440), (2660, 105868), (2786, 101080), (2888, 97510), (3184, 88445), (3610, 78008), (3724, 75620), (3781, 74480), (3920, 71839), (3980, 70756), (4655, 60496), (5054, 55720), (5320, 52934), (5572, 50540), (5776, 48755), (6965, 40432), (7220, 39004), (7448, 37810), (7562, 37240), (7960, 35378), (9310, 30248), (9751, 28880), (10108, 27860), (10640, 26467), (11144, 25270), (12635, 22288), (13930, 20216), (14440, 19502), (14896, 18905), (15124, 18620), (15920, 17689)]