256784640

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:305

約数の個数: 288

約数和(自身を含む): 964244736

約数和(自身を除く): 707460096

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 41, 42, 48, 56, 60, 64, 70, 80, 82, 84, 96, 105, 112, 120, 123, 128, 140, 160, 164, 168, 192, 205, 210, 224, 233, 240, 246, 256, 280, 287, 320, 328, 336, 384, 410, 420, 448, 466, 480, 492, 560, 574, 615, 640, 656, 672, 699, 768, 820, 840, 861, 896, 932, 960, 984, 1120, 1148, 1165, 1230, 1280, 1312, 1344, 1398, 1435, 1631, 1640, 1680, 1722, 1792, 1864, 1920, 1968, 2240, 2296, 2330, 2460, 2624, 2688, 2796, 2870, 3262, 3280, 3360, 3444, 3495, 3728, 3840, 3936, 4305, 4480, 4592, 4660, 4893, 4920, 5248, 5376, 5592, 5740, 6524, 6560, 6720, 6888, 6990, 7456, 7872, 8155, 8610, 8960, 9184, 9320, 9553, 9786, 9840, 10496, 11184, 11480, 13048, 13120, 13440, 13776, 13980, 14912, 15744, 16310, 17220, 18368, 18640, 19106, 19572, 19680, 22368, 22960, 24465, 26096, 26240, 26880, 27552, 27960, 28659, 29824, 31488, 32620, 34440, 36736, 37280, 38212, 39144, 39360, 44736, 45920, 47765, 48930, 52192, 52480, 55104, 55920, 57318, 59648, 65240, 66871, 68880, 73472, 74560, 76424, 78288, 78720, 89472, 91840, 95530, 97860, 104384, 110208, 111840, 114636, 130480, 133742, 137760, 143295, 149120, 152848, 156576, 157440, 178944, 183680, 191060, 195720, 200613, 208768, 220416, 223680, 229272, 260960, 267484, 275520, 286590, 298240, 305696, 313152, 334355, 367360, 382120, 391440, 401226, 417536, 447360, 458544, 521920, 534968, 551040, 573180, 611392, 626304, 668710, 764240, 782880, 802452, 894720, 917088, 1003065, 1043840, 1069936, 1102080, 1146360, 1222784, 1252608, 1337420, 1528480, 1565760, 1604904, 1834176, 2006130, 2087680, 2139872, 2292720, 2445568, 2674840, 3056960, 3131520, 3209808, 3668352, 4012260, 4279744, 4585440, 5349680, 6113920, 6263040, 6419616, 7336704, 8024520, 8559488, 9170880, 10699360, 12227840, 12839232, 16049040, 17118976, 18341760, 21398720, 25678464, 32098080, 36683520, 42797440, 51356928, 64196160, 85594880, 128392320, 256784640]

約数ペア:

[(1, 256784640), (2, 128392320), (3, 85594880), (4, 64196160), (5, 51356928), (6, 42797440), (7, 36683520), (8, 32098080), (10, 25678464), (12, 21398720), (14, 18341760), (15, 17118976), (16, 16049040), (20, 12839232), (21, 12227840), (24, 10699360), (28, 9170880), (30, 8559488), (32, 8024520), (35, 7336704), (40, 6419616), (41, 6263040), (42, 6113920), (48, 5349680), (56, 4585440), (60, 4279744), (64, 4012260), (70, 3668352), (80, 3209808), (82, 3131520), (84, 3056960), (96, 2674840), (105, 2445568), (112, 2292720), (120, 2139872), (123, 2087680), (128, 2006130), (140, 1834176), (160, 1604904), (164, 1565760), (168, 1528480), (192, 1337420), (205, 1252608), (210, 1222784), (224, 1146360), (233, 1102080), (240, 1069936), (246, 1043840), (256, 1003065), (280, 917088), (287, 894720), (320, 802452), (328, 782880), (336, 764240), (384, 668710), (410, 626304), (420, 611392), (448, 573180), (466, 551040), (480, 534968), (492, 521920), (560, 458544), (574, 447360), (615, 417536), (640, 401226), (656, 391440), (672, 382120), (699, 367360), (768, 334355), (820, 313152), (840, 305696), (861, 298240), (896, 286590), (932, 275520), (960, 267484), (984, 260960), (1120, 229272), (1148, 223680), (1165, 220416), (1230, 208768), (1280, 200613), (1312, 195720), (1344, 191060), (1398, 183680), (1435, 178944), (1631, 157440), (1640, 156576), (1680, 152848), (1722, 149120), (1792, 143295), (1864, 137760), (1920, 133742), (1968, 130480), (2240, 114636), (2296, 111840), (2330, 110208), (2460, 104384), (2624, 97860), (2688, 95530), (2796, 91840), (2870, 89472), (3262, 78720), (3280, 78288), (3360, 76424), (3444, 74560), (3495, 73472), (3728, 68880), (3840, 66871), (3936, 65240), (4305, 59648), (4480, 57318), (4592, 55920), (4660, 55104), (4893, 52480), (4920, 52192), (5248, 48930), (5376, 47765), (5592, 45920), (5740, 44736), (6524, 39360), (6560, 39144), (6720, 38212), (6888, 37280), (6990, 36736), (7456, 34440), (7872, 32620), (8155, 31488), (8610, 29824), (8960, 28659), (9184, 27960), (9320, 27552), (9553, 26880), (9786, 26240), (9840, 26096), (10496, 24465), (11184, 22960), (11480, 22368), (13048, 19680), (13120, 19572), (13440, 19106), (13776, 18640), (13980, 18368), (14912, 17220), (15744, 16310)]