80478720

素因数分解:

$2^9\times 3^2\times 5^1\times 7^1\times {\mathrm{499}}^1$

素因数の和:535

約数の個数: 240

約数和(自身を含む): 319176000

約数和(自身を除く): 238697280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 499, 504, 512, 560, 576, 630, 640, 672, 720, 768, 840, 896, 960, 998, 1008, 1120, 1152, 1260, 1280, 1344, 1440, 1497, 1536, 1680, 1792, 1920, 1996, 2016, 2240, 2304, 2495, 2520, 2560, 2688, 2880, 2994, 3360, 3493, 3584, 3840, 3992, 4032, 4480, 4491, 4608, 4990, 5040, 5376, 5760, 5988, 6720, 6986, 7485, 7680, 7984, 8064, 8960, 8982, 9980, 10080, 10479, 10752, 11520, 11976, 13440, 13972, 14970, 15968, 16128, 17465, 17920, 17964, 19960, 20160, 20958, 22455, 23040, 23952, 26880, 27944, 29940, 31437, 31936, 32256, 34930, 35928, 39920, 40320, 41916, 44910, 47904, 52395, 53760, 55888, 59880, 62874, 63872, 69860, 71856, 79840, 80640, 83832, 89820, 95808, 104790, 111776, 119760, 125748, 127744, 139720, 143712, 157185, 159680, 161280, 167664, 179640, 191616, 209580, 223552, 239520, 251496, 255488, 279440, 287424, 314370, 319360, 335328, 359280, 383232, 419160, 447104, 479040, 502992, 558880, 574848, 628740, 638720, 670656, 718560, 766464, 838320, 894208, 958080, 1005984, 1117760, 1149696, 1257480, 1277440, 1341312, 1437120, 1676640, 1788416, 1916160, 2011968, 2235520, 2299392, 2514960, 2682624, 2874240, 3353280, 3832320, 4023936, 4471040, 5029920, 5365248, 5748480, 6706560, 8047872, 8942080, 10059840, 11496960, 13413120, 16095744, 20119680, 26826240, 40239360, 80478720]

約数ペア:

[(1, 80478720), (2, 40239360), (3, 26826240), (4, 20119680), (5, 16095744), (6, 13413120), (7, 11496960), (8, 10059840), (9, 8942080), (10, 8047872), (12, 6706560), (14, 5748480), (15, 5365248), (16, 5029920), (18, 4471040), (20, 4023936), (21, 3832320), (24, 3353280), (28, 2874240), (30, 2682624), (32, 2514960), (35, 2299392), (36, 2235520), (40, 2011968), (42, 1916160), (45, 1788416), (48, 1676640), (56, 1437120), (60, 1341312), (63, 1277440), (64, 1257480), (70, 1149696), (72, 1117760), (80, 1005984), (84, 958080), (90, 894208), (96, 838320), (105, 766464), (112, 718560), (120, 670656), (126, 638720), (128, 628740), (140, 574848), (144, 558880), (160, 502992), (168, 479040), (180, 447104), (192, 419160), (210, 383232), (224, 359280), (240, 335328), (252, 319360), (256, 314370), (280, 287424), (288, 279440), (315, 255488), (320, 251496), (336, 239520), (360, 223552), (384, 209580), (420, 191616), (448, 179640), (480, 167664), (499, 161280), (504, 159680), (512, 157185), (560, 143712), (576, 139720), (630, 127744), (640, 125748), (672, 119760), (720, 111776), (768, 104790), (840, 95808), (896, 89820), (960, 83832), (998, 80640), (1008, 79840), (1120, 71856), (1152, 69860), (1260, 63872), (1280, 62874), (1344, 59880), (1440, 55888), (1497, 53760), (1536, 52395), (1680, 47904), (1792, 44910), (1920, 41916), (1996, 40320), (2016, 39920), (2240, 35928), (2304, 34930), (2495, 32256), (2520, 31936), (2560, 31437), (2688, 29940), (2880, 27944), (2994, 26880), (3360, 23952), (3493, 23040), (3584, 22455), (3840, 20958), (3992, 20160), (4032, 19960), (4480, 17964), (4491, 17920), (4608, 17465), (4990, 16128), (5040, 15968), (5376, 14970), (5760, 13972), (5988, 13440), (6720, 11976), (6986, 11520), (7485, 10752), (7680, 10479), (7984, 10080), (8064, 9980), (8960, 8982)]