20991189600

素因数分解:

$2^5\times 3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{67801}}^1$

素因数の和:67870

約数の個数: 216

約数和(自身を含む): 75742699032

約数和(自身を除く): 54751509432

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 32, 36, 40, 43, 45, 48, 50, 60, 72, 75, 80, 86, 90, 96, 100, 120, 129, 144, 150, 160, 172, 180, 200, 215, 225, 240, 258, 288, 300, 344, 360, 387, 400, 430, 450, 480, 516, 600, 645, 688, 720, 774, 800, 860, 900, 1032, 1075, 1200, 1290, 1376, 1440, 1548, 1720, 1800, 1935, 2064, 2150, 2400, 2580, 3096, 3225, 3440, 3600, 3870, 4128, 4300, 5160, 6192, 6450, 6880, 7200, 7740, 8600, 9675, 10320, 12384, 12900, 15480, 17200, 19350, 20640, 25800, 30960, 34400, 38700, 51600, 61920, 67801, 77400, 103200, 135602, 154800, 203403, 271204, 309600, 339005, 406806, 542408, 610209, 678010, 813612, 1017015, 1084816, 1220418, 1356020, 1627224, 1695025, 2034030, 2169632, 2440836, 2712040, 2915443, 3051045, 3254448, 3390050, 4068060, 4881672, 5085075, 5424080, 5830886, 6102090, 6508896, 6780100, 8136120, 8746329, 9763344, 10170150, 10848160, 11661772, 12204180, 13560200, 14577215, 15255225, 16272240, 17492658, 19526688, 20340300, 23323544, 24408360, 26238987, 27120400, 29154430, 30510450, 32544480, 34985316, 40680600, 43731645, 46647088, 48816720, 52477974, 54240800, 58308860, 61020900, 69970632, 72886075, 81361200, 87463290, 93294176, 97633440, 104955948, 116617720, 122041800, 131194935, 139941264, 145772150, 162722400, 174926580, 209911896, 218658225, 233235440, 244083600, 262389870, 279882528, 291544300, 349853160, 419823792, 437316450, 466470880, 488167200, 524779740, 583088600, 655974675, 699706320, 839647584, 874632900, 1049559480, 1166177200, 1311949350, 1399412640, 1749265800, 2099118960, 2332354400, 2623898700, 3498531600, 4198237920, 5247797400, 6997063200, 10495594800, 20991189600]

約数ペア:

[(1, 20991189600), (2, 10495594800), (3, 6997063200), (4, 5247797400), (5, 4198237920), (6, 3498531600), (8, 2623898700), (9, 2332354400), (10, 2099118960), (12, 1749265800), (15, 1399412640), (16, 1311949350), (18, 1166177200), (20, 1049559480), (24, 874632900), (25, 839647584), (30, 699706320), (32, 655974675), (36, 583088600), (40, 524779740), (43, 488167200), (45, 466470880), (48, 437316450), (50, 419823792), (60, 349853160), (72, 291544300), (75, 279882528), (80, 262389870), (86, 244083600), (90, 233235440), (96, 218658225), (100, 209911896), (120, 174926580), (129, 162722400), (144, 145772150), (150, 139941264), (160, 131194935), (172, 122041800), (180, 116617720), (200, 104955948), (215, 97633440), (225, 93294176), (240, 87463290), (258, 81361200), (288, 72886075), (300, 69970632), (344, 61020900), (360, 58308860), (387, 54240800), (400, 52477974), (430, 48816720), (450, 46647088), (480, 43731645), (516, 40680600), (600, 34985316), (645, 32544480), (688, 30510450), (720, 29154430), (774, 27120400), (800, 26238987), (860, 24408360), (900, 23323544), (1032, 20340300), (1075, 19526688), (1200, 17492658), (1290, 16272240), (1376, 15255225), (1440, 14577215), (1548, 13560200), (1720, 12204180), (1800, 11661772), (1935, 10848160), (2064, 10170150), (2150, 9763344), (2400, 8746329), (2580, 8136120), (3096, 6780100), (3225, 6508896), (3440, 6102090), (3600, 5830886), (3870, 5424080), (4128, 5085075), (4300, 4881672), (5160, 4068060), (6192, 3390050), (6450, 3254448), (6880, 3051045), (7200, 2915443), (7740, 2712040), (8600, 2440836), (9675, 2169632), (10320, 2034030), (12384, 1695025), (12900, 1627224), (15480, 1356020), (17200, 1220418), (19350, 1084816), (20640, 1017015), (25800, 813612), (30960, 678010), (34400, 610209), (38700, 542408), (51600, 406806), (61920, 339005), (67801, 309600), (77400, 271204), (103200, 203403), (135602, 154800)]