821214720

素因数分解:

$2^9\times 3^3\times 5^1\times {\mathrm{109}}^2$

素因数の和:250

約数の個数: 240

約数和(自身を含む): 2944030320

約数和(自身を除く): 2122815600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 109, 120, 128, 135, 144, 160, 180, 192, 216, 218, 240, 256, 270, 288, 320, 327, 360, 384, 432, 436, 480, 512, 540, 545, 576, 640, 654, 720, 768, 864, 872, 960, 981, 1080, 1090, 1152, 1280, 1308, 1440, 1536, 1635, 1728, 1744, 1920, 1962, 2160, 2180, 2304, 2560, 2616, 2880, 2943, 3270, 3456, 3488, 3840, 3924, 4320, 4360, 4608, 4905, 5232, 5760, 5886, 6540, 6912, 6976, 7680, 7848, 8640, 8720, 9810, 10464, 11520, 11772, 11881, 13080, 13824, 13952, 14715, 15696, 17280, 17440, 19620, 20928, 23040, 23544, 23762, 26160, 27904, 29430, 31392, 34560, 34880, 35643, 39240, 41856, 47088, 47524, 52320, 55808, 58860, 59405, 62784, 69120, 69760, 71286, 78480, 83712, 94176, 95048, 104640, 106929, 117720, 118810, 125568, 139520, 142572, 156960, 167424, 178215, 188352, 190096, 209280, 213858, 235440, 237620, 251136, 279040, 285144, 313920, 320787, 356430, 376704, 380192, 418560, 427716, 470880, 475240, 502272, 534645, 570288, 627840, 641574, 712860, 753408, 760384, 837120, 855432, 941760, 950480, 1069290, 1140576, 1255680, 1283148, 1425720, 1506816, 1520768, 1603935, 1710864, 1883520, 1900960, 2138580, 2281152, 2511360, 2566296, 2851440, 3041536, 3207870, 3421728, 3767040, 3801920, 4277160, 4562304, 5132592, 5702880, 6083072, 6415740, 6843456, 7534080, 7603840, 8554320, 9124608, 10265184, 11405760, 12831480, 13686912, 15207680, 17108640, 18249216, 20530368, 22811520, 25662960, 27373824, 30415360, 34217280, 41060736, 45623040, 51325920, 54747648, 68434560, 82121472, 91246080, 102651840, 136869120, 164242944, 205303680, 273738240, 410607360, 821214720]

約数ペア:

[(1, 821214720), (2, 410607360), (3, 273738240), (4, 205303680), (5, 164242944), (6, 136869120), (8, 102651840), (9, 91246080), (10, 82121472), (12, 68434560), (15, 54747648), (16, 51325920), (18, 45623040), (20, 41060736), (24, 34217280), (27, 30415360), (30, 27373824), (32, 25662960), (36, 22811520), (40, 20530368), (45, 18249216), (48, 17108640), (54, 15207680), (60, 13686912), (64, 12831480), (72, 11405760), (80, 10265184), (90, 9124608), (96, 8554320), (108, 7603840), (109, 7534080), (120, 6843456), (128, 6415740), (135, 6083072), (144, 5702880), (160, 5132592), (180, 4562304), (192, 4277160), (216, 3801920), (218, 3767040), (240, 3421728), (256, 3207870), (270, 3041536), (288, 2851440), (320, 2566296), (327, 2511360), (360, 2281152), (384, 2138580), (432, 1900960), (436, 1883520), (480, 1710864), (512, 1603935), (540, 1520768), (545, 1506816), (576, 1425720), (640, 1283148), (654, 1255680), (720, 1140576), (768, 1069290), (864, 950480), (872, 941760), (960, 855432), (981, 837120), (1080, 760384), (1090, 753408), (1152, 712860), (1280, 641574), (1308, 627840), (1440, 570288), (1536, 534645), (1635, 502272), (1728, 475240), (1744, 470880), (1920, 427716), (1962, 418560), (2160, 380192), (2180, 376704), (2304, 356430), (2560, 320787), (2616, 313920), (2880, 285144), (2943, 279040), (3270, 251136), (3456, 237620), (3488, 235440), (3840, 213858), (3924, 209280), (4320, 190096), (4360, 188352), (4608, 178215), (4905, 167424), (5232, 156960), (5760, 142572), (5886, 139520), (6540, 125568), (6912, 118810), (6976, 117720), (7680, 106929), (7848, 104640), (8640, 95048), (8720, 94176), (9810, 83712), (10464, 78480), (11520, 71286), (11772, 69760), (11881, 69120), (13080, 62784), (13824, 59405), (13952, 58860), (14715, 55808), (15696, 52320), (17280, 47524), (17440, 47088), (19620, 41856), (20928, 39240), (23040, 35643), (23544, 34880), (23762, 34560), (26160, 31392), (27904, 29430)]