281381520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:438

約数の個数: 240

約数和(自身を含む): 1032041088

約数和(自身を除く): 750659568

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 71, 80, 84, 98, 105, 112, 120, 140, 142, 147, 168, 196, 210, 213, 240, 245, 280, 284, 294, 336, 337, 355, 392, 420, 426, 490, 497, 560, 568, 588, 674, 710, 735, 784, 840, 852, 980, 994, 1011, 1065, 1136, 1176, 1348, 1420, 1470, 1491, 1680, 1685, 1704, 1960, 1988, 2022, 2130, 2352, 2359, 2485, 2696, 2840, 2940, 2982, 3370, 3408, 3479, 3920, 3976, 4044, 4260, 4718, 4970, 5055, 5392, 5680, 5880, 5964, 6740, 6958, 7077, 7455, 7952, 8088, 8520, 9436, 9940, 10110, 10437, 11760, 11795, 11928, 13480, 13916, 14154, 14910, 16176, 16513, 17040, 17395, 18872, 19880, 20220, 20874, 23590, 23856, 23927, 26960, 27832, 28308, 29820, 33026, 34790, 35385, 37744, 39760, 40440, 41748, 47180, 47854, 49539, 52185, 55664, 56616, 59640, 66052, 69580, 70770, 71781, 80880, 82565, 83496, 94360, 95708, 99078, 104370, 113232, 119280, 119635, 132104, 139160, 141540, 143562, 165130, 166992, 167489, 188720, 191416, 198156, 208740, 239270, 247695, 264208, 278320, 283080, 287124, 330260, 334978, 358905, 382832, 396312, 417480, 478540, 495390, 502467, 566160, 574248, 660520, 669956, 717810, 792624, 834960, 837445, 957080, 990780, 1004934, 1148496, 1172423, 1321040, 1339912, 1435620, 1674890, 1914160, 1981560, 2009868, 2344846, 2512335, 2679824, 2871240, 3349780, 3517269, 3963120, 4019736, 4689692, 5024670, 5742480, 5862115, 6699560, 7034538, 8039472, 9379384, 10049340, 11724230, 13399120, 14069076, 17586345, 18758768, 20098680, 23448460, 28138152, 35172690, 40197360, 46896920, 56276304, 70345380, 93793840, 140690760, 281381520]

約数ペア:

[(1, 281381520), (2, 140690760), (3, 93793840), (4, 70345380), (5, 56276304), (6, 46896920), (7, 40197360), (8, 35172690), (10, 28138152), (12, 23448460), (14, 20098680), (15, 18758768), (16, 17586345), (20, 14069076), (21, 13399120), (24, 11724230), (28, 10049340), (30, 9379384), (35, 8039472), (40, 7034538), (42, 6699560), (48, 5862115), (49, 5742480), (56, 5024670), (60, 4689692), (70, 4019736), (71, 3963120), (80, 3517269), (84, 3349780), (98, 2871240), (105, 2679824), (112, 2512335), (120, 2344846), (140, 2009868), (142, 1981560), (147, 1914160), (168, 1674890), (196, 1435620), (210, 1339912), (213, 1321040), (240, 1172423), (245, 1148496), (280, 1004934), (284, 990780), (294, 957080), (336, 837445), (337, 834960), (355, 792624), (392, 717810), (420, 669956), (426, 660520), (490, 574248), (497, 566160), (560, 502467), (568, 495390), (588, 478540), (674, 417480), (710, 396312), (735, 382832), (784, 358905), (840, 334978), (852, 330260), (980, 287124), (994, 283080), (1011, 278320), (1065, 264208), (1136, 247695), (1176, 239270), (1348, 208740), (1420, 198156), (1470, 191416), (1491, 188720), (1680, 167489), (1685, 166992), (1704, 165130), (1960, 143562), (1988, 141540), (2022, 139160), (2130, 132104), (2352, 119635), (2359, 119280), (2485, 113232), (2696, 104370), (2840, 99078), (2940, 95708), (2982, 94360), (3370, 83496), (3408, 82565), (3479, 80880), (3920, 71781), (3976, 70770), (4044, 69580), (4260, 66052), (4718, 59640), (4970, 56616), (5055, 55664), (5392, 52185), (5680, 49539), (5880, 47854), (5964, 47180), (6740, 41748), (6958, 40440), (7077, 39760), (7455, 37744), (7952, 35385), (8088, 34790), (8520, 33026), (9436, 29820), (9940, 28308), (10110, 27832), (10437, 26960), (11760, 23927), (11795, 23856), (11928, 23590), (13480, 20874), (13916, 20220), (14154, 19880), (14910, 18872), (16176, 17395), (16513, 17040)]