1280525760

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:545

約数の個数: 280

約数和(自身を含む): 4602723840

約数和(自身を除く): 3322198080

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, 127, 135, 144, 160, 162, 180, 192, 216, 240, 254, 270, 288, 320, 324, 360, 381, 389, 405, 432, 480, 508, 540, 576, 635, 648, 720, 762, 778, 810, 864, 960, 1016, 1080, 1143, 1167, 1270, 1296, 1440, 1524, 1556, 1620, 1728, 1905, 1945, 2032, 2160, 2286, 2334, 2540, 2592, 2880, 3048, 3112, 3240, 3429, 3501, 3810, 3890, 4064, 4320, 4572, 4668, 5080, 5184, 5715, 5835, 6096, 6224, 6480, 6858, 7002, 7620, 7780, 8128, 8640, 9144, 9336, 10160, 10287, 10503, 11430, 11670, 12192, 12448, 12960, 13716, 14004, 15240, 15560, 17145, 17505, 18288, 18672, 20320, 20574, 21006, 22860, 23340, 24384, 24896, 25920, 27432, 28008, 30480, 31120, 31509, 34290, 35010, 36576, 37344, 40640, 41148, 42012, 45720, 46680, 49403, 51435, 52515, 54864, 56016, 60960, 62240, 63018, 68580, 70020, 73152, 74688, 82296, 84024, 91440, 93360, 98806, 102870, 105030, 109728, 112032, 121920, 124480, 126036, 137160, 140040, 148209, 157545, 164592, 168048, 182880, 186720, 197612, 205740, 210060, 219456, 224064, 247015, 252072, 274320, 280080, 296418, 315090, 329184, 336096, 365760, 373440, 395224, 411480, 420120, 444627, 494030, 504144, 548640, 560160, 592836, 630180, 658368, 672192, 741045, 790448, 822960, 840240, 889254, 988060, 1008288, 1097280, 1120320, 1185672, 1260360, 1333881, 1482090, 1580896, 1645920, 1680480, 1778508, 1976120, 2016576, 2223135, 2371344, 2520720, 2667762, 2964180, 3161792, 3291840, 3360960, 3557016, 3952240, 4001643, 4446270, 4742688, 5041440, 5335524, 5928360, 6669405, 7114032, 7904480, 8003286, 8892540, 9485376, 10082880, 10671048, 11856720, 13338810, 14228064, 15808960, 16006572, 17785080, 20008215, 21342096, 23713440, 26677620, 28456128, 32013144, 35570160, 40016430, 42684192, 47426880, 53355240, 64026288, 71140320, 80032860, 85368384, 106710480, 128052576, 142280640, 160065720, 213420960, 256105152, 320131440, 426841920, 640262880, 1280525760]

約数ペア:

[(1, 1280525760), (2, 640262880), (3, 426841920), (4, 320131440), (5, 256105152), (6, 213420960), (8, 160065720), (9, 142280640), (10, 128052576), (12, 106710480), (15, 85368384), (16, 80032860), (18, 71140320), (20, 64026288), (24, 53355240), (27, 47426880), (30, 42684192), (32, 40016430), (36, 35570160), (40, 32013144), (45, 28456128), (48, 26677620), (54, 23713440), (60, 21342096), (64, 20008215), (72, 17785080), (80, 16006572), (81, 15808960), (90, 14228064), (96, 13338810), (108, 11856720), (120, 10671048), (127, 10082880), (135, 9485376), (144, 8892540), (160, 8003286), (162, 7904480), (180, 7114032), (192, 6669405), (216, 5928360), (240, 5335524), (254, 5041440), (270, 4742688), (288, 4446270), (320, 4001643), (324, 3952240), (360, 3557016), (381, 3360960), (389, 3291840), (405, 3161792), (432, 2964180), (480, 2667762), (508, 2520720), (540, 2371344), (576, 2223135), (635, 2016576), (648, 1976120), (720, 1778508), (762, 1680480), (778, 1645920), (810, 1580896), (864, 1482090), (960, 1333881), (1016, 1260360), (1080, 1185672), (1143, 1120320), (1167, 1097280), (1270, 1008288), (1296, 988060), (1440, 889254), (1524, 840240), (1556, 822960), (1620, 790448), (1728, 741045), (1905, 672192), (1945, 658368), (2032, 630180), (2160, 592836), (2286, 560160), (2334, 548640), (2540, 504144), (2592, 494030), (2880, 444627), (3048, 420120), (3112, 411480), (3240, 395224), (3429, 373440), (3501, 365760), (3810, 336096), (3890, 329184), (4064, 315090), (4320, 296418), (4572, 280080), (4668, 274320), (5080, 252072), (5184, 247015), (5715, 224064), (5835, 219456), (6096, 210060), (6224, 205740), (6480, 197612), (6858, 186720), (7002, 182880), (7620, 168048), (7780, 164592), (8128, 157545), (8640, 148209), (9144, 140040), (9336, 137160), (10160, 126036), (10287, 124480), (10503, 121920), (11430, 112032), (11670, 109728), (12192, 105030), (12448, 102870), (12960, 98806), (13716, 93360), (14004, 91440), (15240, 84024), (15560, 82296), (17145, 74688), (17505, 73152), (18288, 70020), (18672, 68580), (20320, 63018), (20574, 62240), (21006, 60960), (22860, 56016), (23340, 54864), (24384, 52515), (24896, 51435), (25920, 49403), (27432, 46680), (28008, 45720), (30480, 42012), (31120, 41148), (31509, 40640), (34290, 37344), (35010, 36576)]