21000913920

素因数分解:

$2^{10}\times 3^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:247

約数の個数: 792

約数和(自身を含む): 86495542848

約数和(自身を除く): 65494628928

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 64, 70, 71, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 128, 131, 140, 142, 144, 147, 160, 168, 180, 192, 196, 210, 213, 224, 240, 245, 252, 256, 262, 280, 284, 288, 294, 315, 320, 336, 355, 360, 384, 392, 393, 420, 426, 441, 448, 480, 490, 497, 504, 512, 524, 560, 568, 576, 588, 630, 639, 640, 655, 672, 710, 720, 735, 768, 784, 786, 840, 852, 882, 896, 917, 960, 980, 994, 1008, 1024, 1048, 1065, 1120, 1136, 1152, 1176, 1179, 1260, 1278, 1280, 1310, 1344, 1420, 1440, 1470, 1491, 1536, 1568, 1572, 1680, 1704, 1764, 1792, 1834, 1920, 1960, 1965, 1988, 2016, 2096, 2130, 2205, 2240, 2272, 2304, 2352, 2358, 2485, 2520, 2556, 2560, 2620, 2688, 2751, 2840, 2880, 2940, 2982, 3072, 3136, 3144, 3195, 3360, 3408, 3479, 3528, 3584, 3668, 3840, 3920, 3930, 3976, 4032, 4192, 4260, 4410, 4473, 4480, 4544, 4585, 4608, 4704, 4716, 4970, 5040, 5112, 5120, 5240, 5376, 5502, 5680, 5760, 5880, 5895, 5964, 6272, 6288, 6390, 6419, 6720, 6816, 6958, 7056, 7168, 7336, 7455, 7680, 7840, 7860, 7952, 8064, 8253, 8384, 8520, 8820, 8946, 8960, 9088, 9170, 9216, 9301, 9408, 9432, 9940, 10080, 10224, 10437, 10480, 10752, 11004, 11360, 11520, 11760, 11790, 11928, 12544, 12576, 12780, 12838, 13440, 13632, 13755, 13916, 14112, 14672, 14910, 15360, 15680, 15720, 15904, 16128, 16506, 16768, 17040, 17395, 17640, 17892, 17920, 18176, 18340, 18602, 18816, 18864, 19257, 19880, 20160, 20448, 20874, 20960, 21504, 22008, 22365, 22720, 23040, 23520, 23580, 23856, 25088, 25152, 25560, 25676, 26880, 27264, 27510, 27832, 27903, 28224, 29344, 29820, 31311, 31360, 31440, 31808, 32095, 32256, 33012, 33536, 34080, 34790, 35280, 35784, 35840, 36352, 36680, 37204, 37632, 37728, 38514, 39760, 40320, 40896, 41265, 41748, 41920, 44016, 44730, 45440, 46080, 46505, 47040, 47160, 47712, 50176, 50304, 51120, 51352, 52185, 53760, 54528, 55020, 55664, 55806, 56448, 57771, 58688, 59640, 62622, 62720, 62880, 63616, 64190, 64512, 65107, 66024, 67072, 68160, 69580, 70560, 71568, 72704, 73360, 74408, 75264, 75456, 77028, 79520, 80640, 81792, 82530, 83496, 83709, 83840, 88032, 89460, 90880, 93010, 94080, 94320, 95424, 96285, 100608, 102240, 102704, 104370, 107520, 109056, 110040, 111328, 111612, 112896, 115542, 117376, 119280, 125244, 125440, 125760, 127232, 128380, 130214, 132048, 134144, 136320, 139160, 139515, 141120, 143136, 146720, 148816, 150528, 150912, 154056, 156555, 159040, 161280, 163584, 165060, 166992, 167418, 167680, 176064, 178920, 181760, 186020, 188160, 188640, 190848, 192570, 195321, 201216, 204480, 205408, 208740, 218112, 220080, 222656, 223224, 225792, 231084, 234752, 238560, 250488, 250880, 251520, 254464, 256760, 260428, 264096, 272640, 278320, 279030, 282240, 286272, 288855, 293440, 297632, 301824, 308112, 313110, 318080, 322560, 325535, 327168, 330120, 333984, 334836, 335360, 352128, 357840, 363520, 372040, 376320, 377280, 381696, 385140, 390642, 402432, 408960, 410816, 417480, 418545, 440160, 445312, 446448, 451584, 455749, 462168, 469504, 477120, 500976, 503040, 508928, 513520, 520856, 528192, 545280, 556640, 558060, 564480, 572544, 577710, 585963, 586880, 595264, 603648, 616224, 626220, 636160, 651070, 654336, 660240, 667968, 669672, 670720, 704256, 715680, 744080, 752640, 754560, 763392, 770280, 781284, 817920, 821632, 834960, 837090, 880320, 890624, 892896, 911498, 924336, 939008, 954240, 976605, 1001952, 1006080, 1027040, 1041712, 1056384, 1090560, 1113280, 1116120, 1128960, 1145088, 1155420, 1171926, 1173760, 1190528, 1207296, 1232448, 1252440, 1272320, 1302140, 1320480, 1335936, 1339344, 1367247, 1408512, 1431360, 1488160, 1509120, 1526784, 1540560, 1562568, 1635840, 1643264, 1669920, 1674180, 1760640, 1781248, 1785792, 1822996, 1848672, 1908480, 1953210, 2003904, 2012160, 2054080, 2083424, 2112768, 2226560, 2232240, 2257920, 2278745, 2290176, 2310840, 2343852, 2347520, 2381056, 2464896, 2504880, 2544640, 2604280, 2640960, 2671872, 2678688, 2734494, 2817024, 2862720, 2929815, 2976320, 3018240, 3081120, 3125136, 3271680, 3286528, 3339840, 3348360, 3521280, 3562496, 3571584, 3645992, 3697344, 3816960, 3906420, 4007808, 4101741, 4108160, 4166848, 4225536, 4453120, 4464480, 4557490, 4580352, 4621680, 4687704, 4695040, 4762112, 4929792, 5009760, 5208560, 5281920, 5343744, 5357376, 5468988, 5725440, 5859630, 5952640, 6036480, 6162240, 6250272, 6573056, 6679680, 6696720, 6836235, 7042560, 7143168, 7291984, 7394688, 7633920, 7812840, 8015616, 8203482, 8216320, 8333696, 8451072, 8906240, 8928960, 9114980, 9243360, 9375408, 9524224, 9859584, 10019520, 10417120, 10563840, 10687488, 10714752, 10937976, 11450880, 11719260, 11905280, 12324480, 12500544, 13359360, 13393440, 13672470, 14085120, 14286336, 14583968, 14789376, 15625680, 16031232, 16406964, 16432640, 16667392, 17812480, 17857920, 18229960, 18486720, 18750816, 19719168, 20039040, 20508705, 20834240, 21127680, 21429504, 21875952, 22901760, 23438520, 23810560, 24648960, 25001088, 26718720, 26786880, 27344940, 28572672, 29167936, 29578752, 31251360, 32062464, 32813928, 32865280, 33334784, 35715840, 36459920, 36973440, 37501632, 40078080, 41017410, 41668480, 42255360, 42859008, 43751904, 46877040, 47621120, 49297920, 50002176, 53437440, 53573760, 54689880, 58335872, 59157504, 62502720, 65627856, 66669568, 71431680, 72919840, 73946880, 75003264, 80156160, 82034820, 83336960, 85718016, 87503808, 93754080, 98595840, 100004352, 107147520, 109379760, 116671744, 125005440, 131255712, 142863360, 145839680, 147893760, 150006528, 160312320, 164069640, 166673920, 175007616, 187508160, 200008704, 214295040, 218759520, 233343488, 250010880, 262511424, 291679360, 295787520, 300013056, 328139280, 333347840, 350015232, 375016320, 428590080, 437519040, 466686976, 500021760, 525022848, 583358720, 600026112, 656278560, 700030464, 750032640, 875038080, 1000043520, 1050045696, 1166717440, 1312557120, 1400060928, 1500065280, 1750076160, 2100091392, 2333434880, 2625114240, 3000130560, 3500152320, 4200182784, 5250228480, 7000304640, 10500456960, 21000913920]

約数ペア:

[(1, 21000913920), (2, 10500456960), (3, 7000304640), (4, 5250228480), (5, 4200182784), (6, 3500152320), (7, 3000130560), (8, 2625114240), (9, 2333434880), (10, 2100091392), (12, 1750076160), (14, 1500065280), (15, 1400060928), (16, 1312557120), (18, 1166717440), (20, 1050045696), (21, 1000043520), (24, 875038080), (28, 750032640), (30, 700030464), (32, 656278560), (35, 600026112), (36, 583358720), (40, 525022848), (42, 500021760), (45, 466686976), (48, 437519040), (49, 428590080), (56, 375016320), (60, 350015232), (63, 333347840), (64, 328139280), (70, 300013056), (71, 295787520), (72, 291679360), (80, 262511424), (84, 250010880), (90, 233343488), (96, 218759520), (98, 214295040), (105, 200008704), (112, 187508160), (120, 175007616), (126, 166673920), (128, 164069640), (131, 160312320), (140, 150006528), (142, 147893760), (144, 145839680), (147, 142863360), (160, 131255712), (168, 125005440), (180, 116671744), (192, 109379760), (196, 107147520), (210, 100004352), (213, 98595840), (224, 93754080), (240, 87503808), (245, 85718016), (252, 83336960), (256, 82034820), (262, 80156160), (280, 75003264), (284, 73946880), (288, 72919840), (294, 71431680), (315, 66669568), (320, 65627856), (336, 62502720), (355, 59157504), (360, 58335872), (384, 54689880), (392, 53573760), (393, 53437440), (420, 50002176), (426, 49297920), (441, 47621120), (448, 46877040), (480, 43751904), (490, 42859008), (497, 42255360), (504, 41668480), (512, 41017410), (524, 40078080), (560, 37501632), (568, 36973440), (576, 36459920), (588, 35715840), (630, 33334784), (639, 32865280), (640, 32813928), (655, 32062464), (672, 31251360), (710, 29578752), (720, 29167936), (735, 28572672), (768, 27344940), (784, 26786880), (786, 26718720), (840, 25001088), (852, 24648960), (882, 23810560), (896, 23438520), (917, 22901760), (960, 21875952), (980, 21429504), (994, 21127680), (1008, 20834240), (1024, 20508705), (1048, 20039040), (1065, 19719168), (1120, 18750816), (1136, 18486720), (1152, 18229960), (1176, 17857920), (1179, 17812480), (1260, 16667392), (1278, 16432640), (1280, 16406964), (1310, 16031232), (1344, 15625680), (1420, 14789376), (1440, 14583968), (1470, 14286336), (1491, 14085120), (1536, 13672470), (1568, 13393440), (1572, 13359360), (1680, 12500544), (1704, 12324480), (1764, 11905280), (1792, 11719260), (1834, 11450880), (1920, 10937976), (1960, 10714752), (1965, 10687488), (1988, 10563840), (2016, 10417120), (2096, 10019520), (2130, 9859584), (2205, 9524224), (2240, 9375408), (2272, 9243360), (2304, 9114980), (2352, 8928960), (2358, 8906240), (2485, 8451072), (2520, 8333696), (2556, 8216320), (2560, 8203482), (2620, 8015616), (2688, 7812840), (2751, 7633920), (2840, 7394688), (2880, 7291984), (2940, 7143168), (2982, 7042560), (3072, 6836235), (3136, 6696720), (3144, 6679680), (3195, 6573056), (3360, 6250272), (3408, 6162240), (3479, 6036480), (3528, 5952640), (3584, 5859630), (3668, 5725440), (3840, 5468988), (3920, 5357376), (3930, 5343744), (3976, 5281920), (4032, 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