20689551360

素因数分解:

$2^{15}\times 3^4\times 5^1\times {\mathrm{1559}}^1$

素因数の和:1606

約数の個数: 320

約数和(自身を含む): 74222319600

約数和(自身を除く): 53532768240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 216, 240, 256, 270, 288, 320, 324, 360, 384, 405, 432, 480, 512, 540, 576, 640, 648, 720, 768, 810, 864, 960, 1024, 1080, 1152, 1280, 1296, 1440, 1536, 1559, 1620, 1728, 1920, 2048, 2160, 2304, 2560, 2592, 2880, 3072, 3118, 3240, 3456, 3840, 4096, 4320, 4608, 4677, 5120, 5184, 5760, 6144, 6236, 6480, 6912, 7680, 7795, 8192, 8640, 9216, 9354, 10240, 10368, 11520, 12288, 12472, 12960, 13824, 14031, 15360, 15590, 16384, 17280, 18432, 18708, 20480, 20736, 23040, 23385, 24576, 24944, 25920, 27648, 28062, 30720, 31180, 32768, 34560, 36864, 37416, 40960, 41472, 42093, 46080, 46770, 49152, 49888, 51840, 55296, 56124, 61440, 62360, 69120, 70155, 73728, 74832, 81920, 82944, 84186, 92160, 93540, 98304, 99776, 103680, 110592, 112248, 122880, 124720, 126279, 138240, 140310, 147456, 149664, 163840, 165888, 168372, 184320, 187080, 199552, 207360, 210465, 221184, 224496, 245760, 249440, 252558, 276480, 280620, 294912, 299328, 331776, 336744, 368640, 374160, 399104, 414720, 420930, 442368, 448992, 491520, 498880, 505116, 552960, 561240, 598656, 631395, 663552, 673488, 737280, 748320, 798208, 829440, 841860, 884736, 897984, 997760, 1010232, 1105920, 1122480, 1197312, 1262790, 1327104, 1346976, 1474560, 1496640, 1596416, 1658880, 1683720, 1795968, 1995520, 2020464, 2211840, 2244960, 2394624, 2525580, 2654208, 2693952, 2993280, 3192832, 3317760, 3367440, 3591936, 3991040, 4040928, 4423680, 4489920, 4789248, 5051160, 5387904, 5986560, 6385664, 6635520, 6734880, 7183872, 7982080, 8081856, 8979840, 9578496, 10102320, 10775808, 11973120, 12771328, 13271040, 13469760, 14367744, 15964160, 16163712, 17959680, 19156992, 20204640, 21551616, 23946240, 25542656, 26939520, 28735488, 31928320, 32327424, 35919360, 38313984, 40409280, 43103232, 47892480, 51085312, 53879040, 57470976, 63856640, 64654848, 71838720, 76627968, 80818560, 86206464, 95784960, 107758080, 114941952, 127713280, 129309696, 143677440, 153255936, 161637120, 172412928, 191569920, 215516160, 229883904, 255426560, 258619392, 287354880, 323274240, 344825856, 383139840, 431032320, 459767808, 517238784, 574709760, 646548480, 689651712, 766279680, 862064640, 1034477568, 1149419520, 1293096960, 1379303424, 1724129280, 2068955136, 2298839040, 2586193920, 3448258560, 4137910272, 5172387840, 6896517120, 10344775680, 20689551360]

約数ペア:

[(1, 20689551360), (2, 10344775680), (3, 6896517120), (4, 5172387840), (5, 4137910272), (6, 3448258560), (8, 2586193920), (9, 2298839040), (10, 2068955136), (12, 1724129280), (15, 1379303424), (16, 1293096960), (18, 1149419520), (20, 1034477568), (24, 862064640), (27, 766279680), (30, 689651712), (32, 646548480), (36, 574709760), (40, 517238784), (45, 459767808), (48, 431032320), (54, 383139840), (60, 344825856), (64, 323274240), (72, 287354880), (80, 258619392), (81, 255426560), (90, 229883904), (96, 215516160), (108, 191569920), (120, 172412928), (128, 161637120), (135, 153255936), (144, 143677440), (160, 129309696), (162, 127713280), (180, 114941952), (192, 107758080), (216, 95784960), (240, 86206464), (256, 80818560), (270, 76627968), (288, 71838720), (320, 64654848), (324, 63856640), (360, 57470976), (384, 53879040), (405, 51085312), (432, 47892480), (480, 43103232), (512, 40409280), (540, 38313984), (576, 35919360), (640, 32327424), (648, 31928320), (720, 28735488), (768, 26939520), (810, 25542656), (864, 23946240), (960, 21551616), (1024, 20204640), (1080, 19156992), (1152, 17959680), (1280, 16163712), (1296, 15964160), (1440, 14367744), (1536, 13469760), (1559, 13271040), (1620, 12771328), (1728, 11973120), (1920, 10775808), (2048, 10102320), (2160, 9578496), (2304, 8979840), (2560, 8081856), (2592, 7982080), (2880, 7183872), (3072, 6734880), (3118, 6635520), (3240, 6385664), (3456, 5986560), (3840, 5387904), (4096, 5051160), (4320, 4789248), (4608, 4489920), (4677, 4423680), (5120, 4040928), (5184, 3991040), (5760, 3591936), (6144, 3367440), (6236, 3317760), (6480, 3192832), (6912, 2993280), (7680, 2693952), (7795, 2654208), (8192, 2525580), (8640, 2394624), (9216, 2244960), (9354, 2211840), (10240, 2020464), (10368, 1995520), (11520, 1795968), (12288, 1683720), (12472, 1658880), (12960, 1596416), (13824, 1496640), (14031, 1474560), (15360, 1346976), (15590, 1327104), (16384, 1262790), (17280, 1197312), (18432, 1122480), (18708, 1105920), (20480, 1010232), (20736, 997760), (23040, 897984), (23385, 884736), (24576, 841860), (24944, 829440), (25920, 798208), (27648, 748320), (28062, 737280), (30720, 673488), (31180, 663552), (32768, 631395), (34560, 598656), (36864, 561240), (37416, 552960), (40960, 505116), (41472, 498880), (42093, 491520), (46080, 448992), (46770, 442368), (49152, 420930), (49888, 414720), (51840, 399104), (55296, 374160), (56124, 368640), (61440, 336744), (62360, 331776), (69120, 299328), (70155, 294912), (73728, 280620), (74832, 276480), (81920, 252558), (82944, 249440), (84186, 245760), (92160, 224496), (93540, 221184), (98304, 210465), (99776, 207360), (103680, 199552), (110592, 187080), (112248, 184320), (122880, 168372), (124720, 165888), (126279, 163840), (138240, 149664), (140310, 147456)]