640275840

素因数分解:

$2^7\times 3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:236

約数の個数: 384

約数和(自身を含む): 2405894400

約数和(自身を除く): 1765618560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 64, 69, 72, 80, 81, 90, 92, 96, 108, 115, 120, 128, 135, 138, 144, 160, 162, 179, 180, 184, 192, 207, 216, 230, 240, 243, 270, 276, 288, 320, 324, 345, 358, 360, 368, 384, 405, 414, 432, 460, 480, 486, 537, 540, 552, 576, 621, 640, 648, 690, 716, 720, 736, 810, 828, 864, 895, 920, 960, 972, 1035, 1074, 1080, 1104, 1152, 1215, 1242, 1296, 1380, 1432, 1440, 1472, 1611, 1620, 1656, 1728, 1790, 1840, 1863, 1920, 1944, 2070, 2148, 2160, 2208, 2430, 2484, 2592, 2685, 2760, 2864, 2880, 2944, 3105, 3222, 3240, 3312, 3456, 3580, 3680, 3726, 3888, 4117, 4140, 4296, 4320, 4416, 4833, 4860, 4968, 5184, 5370, 5520, 5589, 5728, 5760, 6210, 6444, 6480, 6624, 7160, 7360, 7452, 7776, 8055, 8234, 8280, 8592, 8640, 8832, 9315, 9666, 9720, 9936, 10368, 10740, 11040, 11178, 11456, 12351, 12420, 12888, 12960, 13248, 14320, 14499, 14720, 14904, 15552, 16110, 16468, 16560, 17184, 17280, 18630, 19332, 19440, 19872, 20585, 21480, 22080, 22356, 22912, 24165, 24702, 24840, 25776, 25920, 26496, 27945, 28640, 28998, 29808, 31104, 32220, 32936, 33120, 34368, 37053, 37260, 38664, 38880, 39744, 41170, 42960, 43497, 44160, 44712, 48330, 49404, 49680, 51552, 51840, 55890, 57280, 57996, 59616, 61755, 64440, 65872, 66240, 68736, 72495, 74106, 74520, 77328, 77760, 79488, 82340, 85920, 86994, 89424, 96660, 98808, 99360, 103104, 111159, 111780, 114560, 115992, 119232, 123510, 128880, 131744, 132480, 144990, 148212, 149040, 154656, 155520, 164680, 171840, 173988, 178848, 185265, 193320, 197616, 198720, 206208, 217485, 222318, 223560, 231984, 238464, 247020, 257760, 263488, 289980, 296424, 298080, 309312, 329360, 333477, 343680, 347976, 357696, 370530, 386640, 395232, 397440, 434970, 444636, 447120, 463968, 494040, 515520, 526976, 555795, 579960, 592848, 596160, 618624, 658720, 666954, 695952, 715392, 741060, 773280, 790464, 869940, 889272, 894240, 927936, 988080, 1000431, 1031040, 1111590, 1159920, 1185696, 1192320, 1317440, 1333908, 1391904, 1482120, 1546560, 1580928, 1667385, 1739880, 1778544, 1788480, 1855872, 1976160, 2000862, 2223180, 2319840, 2371392, 2634880, 2667816, 2783808, 2964240, 3093120, 3334770, 3479760, 3557088, 3576960, 3952320, 4001724, 4446360, 4639680, 4742784, 5002155, 5335632, 5567616, 5928480, 6669540, 6959520, 7114176, 7904640, 8003448, 8892720, 9279360, 10004310, 10671264, 11856960, 13339080, 13919040, 14228352, 16006896, 17785440, 20008620, 21342528, 23713920, 26678160, 27838080, 32013792, 35570880, 40017240, 42685056, 53356320, 64027584, 71141760, 80034480, 106712640, 128055168, 160068960, 213425280, 320137920, 640275840]

約数ペア:

[(1, 640275840), (2, 320137920), (3, 213425280), (4, 160068960), (5, 128055168), (6, 106712640), (8, 80034480), (9, 71141760), (10, 64027584), (12, 53356320), (15, 42685056), (16, 40017240), (18, 35570880), (20, 32013792), (23, 27838080), (24, 26678160), (27, 23713920), (30, 21342528), (32, 20008620), (36, 17785440), (40, 16006896), (45, 14228352), (46, 13919040), (48, 13339080), (54, 11856960), (60, 10671264), (64, 10004310), (69, 9279360), (72, 8892720), (80, 8003448), (81, 7904640), (90, 7114176), (92, 6959520), (96, 6669540), (108, 5928480), (115, 5567616), (120, 5335632), (128, 5002155), (135, 4742784), (138, 4639680), (144, 4446360), (160, 4001724), (162, 3952320), (179, 3576960), (180, 3557088), (184, 3479760), (192, 3334770), (207, 3093120), (216, 2964240), (230, 2783808), (240, 2667816), (243, 2634880), (270, 2371392), (276, 2319840), (288, 2223180), (320, 2000862), (324, 1976160), (345, 1855872), (358, 1788480), (360, 1778544), (368, 1739880), (384, 1667385), (405, 1580928), (414, 1546560), (432, 1482120), (460, 1391904), (480, 1333908), (486, 1317440), (537, 1192320), (540, 1185696), (552, 1159920), (576, 1111590), (621, 1031040), (640, 1000431), (648, 988080), (690, 927936), (716, 894240), (720, 889272), (736, 869940), (810, 790464), (828, 773280), (864, 741060), (895, 715392), (920, 695952), (960, 666954), (972, 658720), (1035, 618624), (1074, 596160), (1080, 592848), (1104, 579960), (1152, 555795), (1215, 526976), (1242, 515520), (1296, 494040), (1380, 463968), (1432, 447120), (1440, 444636), (1472, 434970), (1611, 397440), (1620, 395232), (1656, 386640), (1728, 370530), (1790, 357696), (1840, 347976), (1863, 343680), (1920, 333477), (1944, 329360), (2070, 309312), (2148, 298080), (2160, 296424), (2208, 289980), (2430, 263488), (2484, 257760), (2592, 247020), (2685, 238464), (2760, 231984), (2864, 223560), (2880, 222318), (2944, 217485), (3105, 206208), (3222, 198720), (3240, 197616), (3312, 193320), (3456, 185265), (3580, 178848), (3680, 173988), (3726, 171840), (3888, 164680), (4117, 155520), (4140, 154656), (4296, 149040), (4320, 148212), (4416, 144990), (4833, 132480), (4860, 131744), (4968, 128880), (5184, 123510), (5370, 119232), (5520, 115992), (5589, 114560), (5728, 111780), (5760, 111159), (6210, 103104), (6444, 99360), (6480, 98808), (6624, 96660), (7160, 89424), (7360, 86994), (7452, 85920), (7776, 82340), (8055, 79488), (8234, 77760), (8280, 77328), (8592, 74520), (8640, 74106), (8832, 72495), (9315, 68736), (9666, 66240), (9720, 65872), (9936, 64440), (10368, 61755), (10740, 59616), (11040, 57996), (11178, 57280), (11456, 55890), (12351, 51840), (12420, 51552), (12888, 49680), (12960, 49404), (13248, 48330), (14320, 44712), (14499, 44160), (14720, 43497), (14904, 42960), (15552, 41170), (16110, 39744), (16468, 38880), (16560, 38664), (17184, 37260), (17280, 37053), (18630, 34368), (19332, 33120), (19440, 32936), (19872, 32220), (20585, 31104), (21480, 29808), (22080, 28998), (22356, 28640), (22912, 27945), (24165, 26496), (24702, 25920), (24840, 25776)]