20640193920

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{1789}}^1\times {\mathrm{2003}}^1$

素因数の和:3817

約数の個数: 192

約数和(自身を含む): 71348612400

約数和(自身を除く): 50708418480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 288, 320, 360, 384, 480, 576, 640, 720, 960, 1152, 1440, 1789, 1920, 2003, 2880, 3578, 4006, 5367, 5760, 6009, 7156, 8012, 8945, 10015, 10734, 12018, 14312, 16024, 16101, 17890, 18027, 20030, 21468, 24036, 26835, 28624, 30045, 32048, 32202, 35780, 36054, 40060, 42936, 48072, 53670, 57248, 60090, 64096, 64404, 71560, 72108, 80120, 80505, 85872, 90135, 96144, 107340, 114496, 120180, 128192, 128808, 143120, 144216, 160240, 161010, 171744, 180270, 192288, 214680, 228992, 240360, 256384, 257616, 286240, 288432, 320480, 322020, 343488, 360540, 384576, 429360, 480720, 515232, 572480, 576864, 640960, 644040, 686976, 721080, 769152, 858720, 961440, 1030464, 1144960, 1153728, 1281920, 1288080, 1442160, 1717440, 1922880, 2060928, 2307456, 2576160, 2884320, 3434880, 3583367, 3845760, 5152320, 5768640, 7166734, 10304640, 10750101, 11537280, 14333468, 17916835, 21500202, 28666936, 32250303, 35833670, 43000404, 53750505, 57333872, 64500606, 71667340, 86000808, 107501010, 114667744, 129001212, 143334680, 161251515, 172001616, 215002020, 229335488, 258002424, 286669360, 322503030, 344003232, 430004040, 458670976, 516004848, 573338720, 645006060, 688006464, 860008080, 1032009696, 1146677440, 1290012120, 1376012928, 1720016160, 2064019392, 2293354880, 2580024240, 3440032320, 4128038784, 5160048480, 6880064640, 10320096960, 20640193920]

約数ペア:

[(1, 20640193920), (2, 10320096960), (3, 6880064640), (4, 5160048480), (5, 4128038784), (6, 3440032320), (8, 2580024240), (9, 2293354880), (10, 2064019392), (12, 1720016160), (15, 1376012928), (16, 1290012120), (18, 1146677440), (20, 1032009696), (24, 860008080), (30, 688006464), (32, 645006060), (36, 573338720), (40, 516004848), (45, 458670976), (48, 430004040), (60, 344003232), (64, 322503030), (72, 286669360), (80, 258002424), (90, 229335488), (96, 215002020), (120, 172001616), (128, 161251515), (144, 143334680), (160, 129001212), (180, 114667744), (192, 107501010), (240, 86000808), (288, 71667340), (320, 64500606), (360, 57333872), (384, 53750505), (480, 43000404), (576, 35833670), (640, 32250303), (720, 28666936), (960, 21500202), (1152, 17916835), (1440, 14333468), (1789, 11537280), (1920, 10750101), (2003, 10304640), (2880, 7166734), (3578, 5768640), (4006, 5152320), (5367, 3845760), (5760, 3583367), (6009, 3434880), (7156, 2884320), (8012, 2576160), (8945, 2307456), (10015, 2060928), (10734, 1922880), (12018, 1717440), (14312, 1442160), (16024, 1288080), (16101, 1281920), (17890, 1153728), (18027, 1144960), (20030, 1030464), (21468, 961440), (24036, 858720), (26835, 769152), (28624, 721080), (30045, 686976), (32048, 644040), (32202, 640960), (35780, 576864), (36054, 572480), (40060, 515232), (42936, 480720), (48072, 429360), (53670, 384576), (57248, 360540), (60090, 343488), (64096, 322020), (64404, 320480), (71560, 288432), (72108, 286240), (80120, 257616), (80505, 256384), (85872, 240360), (90135, 228992), (96144, 214680), (107340, 192288), (114496, 180270), (120180, 171744), (128192, 161010), (128808, 160240), (143120, 144216)]