1278558720

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:503

約数の個数: 240

約数和(自身を含む): 4465910592

約数和(自身を除く): 3187351872

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 211, 240, 256, 263, 288, 320, 360, 384, 422, 480, 512, 526, 576, 633, 640, 720, 768, 789, 844, 960, 1052, 1055, 1152, 1266, 1280, 1315, 1440, 1536, 1578, 1688, 1899, 1920, 2104, 2110, 2304, 2367, 2532, 2560, 2630, 2880, 3156, 3165, 3376, 3798, 3840, 3945, 4208, 4220, 4608, 4734, 5064, 5260, 5760, 6312, 6330, 6752, 7596, 7680, 7890, 8416, 8440, 9468, 9495, 10128, 10520, 11520, 11835, 12624, 12660, 13504, 15192, 15780, 16832, 16880, 18936, 18990, 20256, 21040, 23040, 23670, 25248, 25320, 27008, 30384, 31560, 33664, 33760, 37872, 37980, 40512, 42080, 47340, 50496, 50640, 54016, 55493, 60768, 63120, 67328, 67520, 75744, 75960, 81024, 84160, 94680, 100992, 101280, 108032, 110986, 121536, 126240, 134656, 135040, 151488, 151920, 162048, 166479, 168320, 189360, 201984, 202560, 221972, 243072, 252480, 270080, 277465, 302976, 303840, 324096, 332958, 336640, 378720, 403968, 405120, 443944, 486144, 499437, 504960, 540160, 554930, 605952, 607680, 665916, 673280, 757440, 810240, 832395, 887888, 972288, 998874, 1009920, 1109860, 1211904, 1215360, 1331832, 1514880, 1620480, 1664790, 1775776, 1997748, 2019840, 2219720, 2430720, 2497185, 2663664, 3029760, 3329580, 3551552, 3995496, 4439440, 4861440, 4994370, 5327328, 6059520, 6659160, 7103104, 7990992, 8878880, 9988740, 10654656, 13318320, 14206208, 15981984, 17757760, 19977480, 21309312, 26636640, 28412416, 31963968, 35515520, 39954960, 42618624, 53273280, 63927936, 71031040, 79909920, 85237248, 106546560, 127855872, 142062080, 159819840, 213093120, 255711744, 319639680, 426186240, 639279360, 1278558720]

約数ペア:

[(1, 1278558720), (2, 639279360), (3, 426186240), (4, 319639680), (5, 255711744), (6, 213093120), (8, 159819840), (9, 142062080), (10, 127855872), (12, 106546560), (15, 85237248), (16, 79909920), (18, 71031040), (20, 63927936), (24, 53273280), (30, 42618624), (32, 39954960), (36, 35515520), (40, 31963968), (45, 28412416), (48, 26636640), (60, 21309312), (64, 19977480), (72, 17757760), (80, 15981984), (90, 14206208), (96, 13318320), (120, 10654656), (128, 9988740), (144, 8878880), (160, 7990992), (180, 7103104), (192, 6659160), (211, 6059520), (240, 5327328), (256, 4994370), (263, 4861440), (288, 4439440), (320, 3995496), (360, 3551552), (384, 3329580), (422, 3029760), (480, 2663664), (512, 2497185), (526, 2430720), (576, 2219720), (633, 2019840), (640, 1997748), (720, 1775776), (768, 1664790), (789, 1620480), (844, 1514880), (960, 1331832), (1052, 1215360), (1055, 1211904), (1152, 1109860), (1266, 1009920), (1280, 998874), (1315, 972288), (1440, 887888), (1536, 832395), (1578, 810240), (1688, 757440), (1899, 673280), (1920, 665916), (2104, 607680), (2110, 605952), (2304, 554930), (2367, 540160), (2532, 504960), (2560, 499437), (2630, 486144), (2880, 443944), (3156, 405120), (3165, 403968), (3376, 378720), (3798, 336640), (3840, 332958), (3945, 324096), (4208, 303840), (4220, 302976), (4608, 277465), (4734, 270080), (5064, 252480), (5260, 243072), (5760, 221972), (6312, 202560), (6330, 201984), (6752, 189360), (7596, 168320), (7680, 166479), (7890, 162048), (8416, 151920), (8440, 151488), (9468, 135040), (9495, 134656), (10128, 126240), (10520, 121536), (11520, 110986), (11835, 108032), (12624, 101280), (12660, 100992), (13504, 94680), (15192, 84160), (15780, 81024), (16832, 75960), (16880, 75744), (18936, 67520), (18990, 67328), (20256, 63120), (21040, 60768), (23040, 55493), (23670, 54016), (25248, 50640), (25320, 50496), (27008, 47340), (30384, 42080), (31560, 40512), (33664, 37980), (33760, 37872)]