20581249920

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:507

約数の個数: 1024

約数和(自身を含む): 91371110400

約数和(自身を除く): 70789860480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 17, 19, 20, 21, 22, 24, 28, 30, 32, 33, 34, 35, 38, 40, 42, 44, 48, 51, 55, 56, 57, 60, 64, 66, 68, 70, 76, 77, 80, 84, 85, 88, 95, 96, 102, 105, 110, 112, 114, 119, 120, 128, 132, 133, 136, 140, 152, 154, 160, 165, 168, 170, 176, 187, 190, 192, 204, 209, 210, 220, 224, 228, 231, 238, 240, 255, 264, 266, 272, 280, 285, 304, 308, 320, 323, 330, 336, 340, 352, 357, 374, 380, 384, 385, 399, 408, 418, 420, 431, 440, 448, 456, 462, 476, 480, 510, 528, 532, 544, 560, 561, 570, 595, 608, 616, 627, 640, 646, 660, 665, 672, 680, 704, 714, 748, 760, 770, 798, 816, 836, 840, 862, 880, 896, 912, 924, 935, 952, 960, 969, 1020, 1045, 1056, 1064, 1088, 1120, 1122, 1140, 1155, 1190, 1216, 1232, 1254, 1292, 1293, 1309, 1320, 1330, 1344, 1360, 1408, 1428, 1463, 1496, 1520, 1540, 1596, 1615, 1632, 1672, 1680, 1724, 1760, 1785, 1824, 1848, 1870, 1904, 1920, 1938, 1995, 2040, 2090, 2112, 2128, 2155, 2176, 2240, 2244, 2261, 2280, 2310, 2380, 2432, 2464, 2508, 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11938080, 12250744, 12309360, 12611060, 12743808, 12895520, 13364448, 13540296, 13757520, 14067840, 14412640, 14617365, 15133272, 15313430, 15474624, 15591856, 15722880, 15917440, 15929760, 16412480, 16705560, 16925370, 17295168, 17819264, 18053728, 18343360, 18376116, 18916590, 19343280, 19489820, 19694976, 20177696, 21239680, 21438802, 21618960, 22012032, 22274080, 22567160, 22970145, 23387784, 23876160, 24501488, 24618720, 25222120, 25791040, 26728896, 27080592, 27515040, 28825280, 29234730, 30266544, 30626860, 30949248, 31183712, 31859520, 32158203, 32824960, 33411120, 33850740, 34590336, 36107456, 36686720, 36752232, 37833180, 38686560, 38979640, 40355392, 42877604, 43237920, 44548160, 45134320, 45940290, 46775568, 47752320, 49002976, 49237440, 50444240, 51582080, 53457792, 53597005, 54161184, 55030080, 57650560, 58469460, 60533088, 61253720, 62367424, 63719040, 64316406, 66822240, 67701480, 72214912, 73504464, 75666360, 77373120, 77959280, 80710784, 85755208, 86475840, 89096320, 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約数ペア:

[(1, 20581249920), (2, 10290624960), (3, 6860416640), (4, 5145312480), (5, 4116249984), (6, 3430208320), (7, 2940178560), (8, 2572656240), (10, 2058124992), (11, 1871022720), (12, 1715104160), (14, 1470089280), (15, 1372083328), (16, 1286328120), (17, 1210661760), (19, 1083223680), (20, 1029062496), (21, 980059520), (22, 935511360), (24, 857552080), (28, 735044640), (30, 686041664), (32, 643164060), (33, 623674240), (34, 605330880), (35, 588035712), (38, 541611840), (40, 514531248), (42, 490029760), (44, 467755680), (48, 428776040), (51, 403553920), (55, 374204544), (56, 367522320), (57, 361074560), (60, 343020832), (64, 321582030), (66, 311837120), (68, 302665440), (70, 294017856), (76, 270805920), (77, 267288960), (80, 257265624), (84, 245014880), (85, 242132352), (88, 233877840), (95, 216644736), (96, 214388020), (102, 201776960), (105, 196011904), (110, 187102272), (112, 183761160), (114, 180537280), (119, 172951680), (120, 171510416), (128, 160791015), (132, 155918560), (133, 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(18480, 1113704), (18964, 1085280), (19040, 1080948), (19380, 1061984), (19635, 1048192), (20064, 1025780), (20672, 995610), (20688, 994840), (20944, 982680), (21120, 974491), (21280, 967164), (21318, 965440), (21945, 937856), (21981, 936320), (22440, 917168), (22610, 910272), (22848, 900790), (23408, 879240), (23705, 868224), (23936, 859845), (24136, 852720), (24567, 837760), (24640, 835278), (24871, 827520), (25080, 820624), (25536, 805970), (25840, 796488), (25860, 795872), (26180, 786144), (26752, 769335), (27132, 758560), (27584, 746130), (28424, 724080), (28446, 723520), (28560, 720632), (29260, 703392), (29308, 702240), (29568, 696065), (29920, 687876), (30170, 682176), (31008, 663740), (31416, 655120), (31920, 644776), (32640, 630553), (32756, 628320), (33187, 620160), (33440, 615468), (33915, 606848), (34480, 596904), (35112, 586160), (35530, 579264), (35904, 573230), (36176, 568920), (36204, 568480), (36480, 564179), (36635, 561792), (36960, 556852), (37928, 542640), (38080, 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(78540, 262048), (80256, 256445), (80597, 255360), (81890, 251328), (82752, 248710), (83776, 245670), (85120, 241791), (85272, 241360), (87780, 234464), (87924, 234080), (89760, 229292), (90079, 228480), (90440, 227568), (90510, 227392), (93632, 219810), (94820, 217056), (96544, 213180), (98268, 209440), (99484, 206880), (99561, 206720), (100320, 205156), (102578, 200640), (103360, 199122), (103440, 198968), (104720, 196536), (106590, 193088), (108528, 189640), (109905, 187264), (113696, 181020), (113784, 180880), (114240, 180158), (114646, 179520), (117040, 175848), (117232, 175560), (119680, 171969), (120680, 170544), (122835, 167552), (124032, 165935), (124355, 165504), (125664, 163780), (127680, 161194), (131024, 157080), (132748, 155040), (133760, 153867), (135660, 151712), (137920, 149226), (139213, 147840), (140448, 146540), (142120, 144816), (142230, 144704)]