80459680

素因数分解:

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

素因数の和:259

約数の個数: 144

約数和(自身を含む): 230428800

約数和(自身を除く): 149969120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 199, 224, 266, 280, 304, 361, 380, 398, 532, 560, 608, 665, 722, 760, 796, 995, 1064, 1120, 1330, 1393, 1444, 1520, 1592, 1805, 1990, 2128, 2527, 2660, 2786, 2888, 3040, 3184, 3610, 3781, 3980, 4256, 5054, 5320, 5572, 5776, 6368, 6965, 7220, 7562, 7960, 10108, 10640, 11144, 11552, 12635, 13930, 14440, 15124, 15920, 18905, 20216, 21280, 22288, 25270, 26467, 27860, 28880, 30248, 31840, 37810, 40432, 44576, 50540, 52934, 55720, 57760, 60496, 71839, 75620, 80864, 101080, 105868, 111440, 120992, 132335, 143678, 151240, 202160, 211736, 222880, 264670, 287356, 302480, 359195, 404320, 423472, 502873, 529340, 574712, 604960, 718390, 846944, 1005746, 1058680, 1149424, 1436780, 2011492, 2117360, 2298848, 2514365, 2873560, 4022984, 4234720, 5028730, 5747120, 8045968, 10057460, 11494240, 16091936, 20114920, 40229840, 80459680]

約数ペア:

[(1, 80459680), (2, 40229840), (4, 20114920), (5, 16091936), (7, 11494240), (8, 10057460), (10, 8045968), (14, 5747120), (16, 5028730), (19, 4234720), (20, 4022984), (28, 2873560), (32, 2514365), (35, 2298848), (38, 2117360), (40, 2011492), (56, 1436780), (70, 1149424), (76, 1058680), (80, 1005746), (95, 846944), (112, 718390), (133, 604960), (140, 574712), (152, 529340), (160, 502873), (190, 423472), (199, 404320), (224, 359195), (266, 302480), (280, 287356), (304, 264670), (361, 222880), (380, 211736), (398, 202160), (532, 151240), (560, 143678), (608, 132335), (665, 120992), (722, 111440), (760, 105868), (796, 101080), (995, 80864), (1064, 75620), (1120, 71839), (1330, 60496), (1393, 57760), (1444, 55720), (1520, 52934), (1592, 50540), (1805, 44576), (1990, 40432), (2128, 37810), (2527, 31840), (2660, 30248), (2786, 28880), (2888, 27860), (3040, 26467), (3184, 25270), (3610, 22288), (3781, 21280), (3980, 20216), (4256, 18905), (5054, 15920), (5320, 15124), (5572, 14440), (5776, 13930), (6368, 12635), (6965, 11552), (7220, 11144), (7562, 10640), (7960, 10108)]