20728670760

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1\times {\mathrm{271}}^1$

素因数の和:661

約数の個数: 384

約数和(自身を含む): 78210662400

約数和(自身を除く): 57481991640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 127, 140, 168, 180, 210, 239, 252, 254, 271, 280, 315, 360, 381, 420, 478, 504, 508, 542, 630, 635, 717, 762, 813, 840, 889, 956, 1016, 1084, 1143, 1195, 1260, 1270, 1355, 1434, 1524, 1626, 1673, 1778, 1897, 1905, 1912, 2151, 2168, 2286, 2390, 2439, 2520, 2540, 2667, 2710, 2868, 3048, 3252, 3346, 3556, 3585, 3794, 3810, 4065, 4302, 4445, 4572, 4780, 4878, 5019, 5080, 5334, 5420, 5691, 5715, 5736, 6504, 6692, 7112, 7170, 7588, 7620, 8001, 8130, 8365, 8604, 8890, 9144, 9485, 9560, 9756, 10038, 10668, 10755, 10840, 11382, 11430, 12195, 13335, 13384, 14340, 15057, 15176, 15240, 16002, 16260, 16730, 17073, 17208, 17780, 18970, 19512, 20076, 21336, 21510, 22764, 22860, 24390, 25095, 26670, 28455, 28680, 30114, 30353, 32004, 32520, 33460, 34146, 34417, 35560, 37940, 40005, 40152, 43020, 45528, 45720, 48780, 50190, 53340, 56910, 60228, 60706, 64008, 64769, 66920, 68292, 68834, 75285, 75880, 80010, 85365, 86040, 91059, 97560, 100380, 103251, 106680, 113820, 120456, 121412, 129538, 136584, 137668, 150570, 151765, 160020, 170730, 172085, 182118, 194307, 200760, 206502, 212471, 227640, 240919, 242824, 259076, 273177, 275336, 301140, 303530, 309753, 320040, 323845, 341460, 344170, 364236, 388614, 413004, 424942, 453383, 455295, 481838, 516255, 518152, 546354, 582921, 602280, 607060, 619506, 637413, 647690, 682920, 688340, 722757, 728472, 777228, 826008, 849884, 906766, 910590, 963676, 971535, 1032510, 1062355, 1092708, 1165842, 1204595, 1214120, 1239012, 1274826, 1295380, 1360149, 1365885, 1376680, 1445514, 1548765, 1554456, 1699768, 1813532, 1821180, 1912239, 1927352, 1943070, 2065020, 2124710, 2168271, 2185416, 2266915, 2331684, 2409190, 2478024, 2549652, 2590760, 2720298, 2731770, 2891028, 2914605, 3097530, 3187065, 3613785, 3627064, 3642360, 3824478, 3886140, 4080447, 4130040, 4249420, 4336542, 4533830, 4663368, 4818380, 5099304, 5440596, 5463540, 5782056, 5829210, 6195060, 6374130, 6800745, 7227570, 7648956, 7772280, 8160894, 8225663, 8498840, 8673084, 9067660, 9561195, 9636760, 10841355, 10881192, 10927080, 11658420, 12390120, 12748260, 13601490, 14455140, 15297912, 16321788, 16451326, 17346168, 18135320, 19122390, 20402235, 21682710, 23316840, 24676989, 25496520, 27202980, 28910280, 32643576, 32902652, 38244780, 40804470, 41128315, 43365420, 49353978, 54405960, 57579641, 65805304, 74030967, 76489560, 81608940, 82256630, 86730840, 98707956, 115159282, 123384945, 148061934, 163217880, 164513260, 172738923, 197415912, 230318564, 246769890, 287898205, 296123868, 329026520, 345477846, 370154835, 460637128, 493539780, 518216769, 575796410, 592247736, 690955692, 740309670, 863694615, 987079560, 1036433538, 1151592820, 1381911384, 1480619340, 1727389230, 2072867076, 2303185640, 2591083845, 2961238680, 3454778460, 4145734152, 5182167690, 6909556920, 10364335380, 20728670760]

約数ペア:

[(1, 20728670760), (2, 10364335380), (3, 6909556920), (4, 5182167690), (5, 4145734152), (6, 3454778460), (7, 2961238680), (8, 2591083845), (9, 2303185640), (10, 2072867076), (12, 1727389230), (14, 1480619340), (15, 1381911384), (18, 1151592820), (20, 1036433538), (21, 987079560), (24, 863694615), (28, 740309670), (30, 690955692), (35, 592247736), (36, 575796410), (40, 518216769), (42, 493539780), (45, 460637128), (56, 370154835), (60, 345477846), (63, 329026520), (70, 296123868), (72, 287898205), (84, 246769890), (90, 230318564), (105, 197415912), (120, 172738923), (126, 164513260), (127, 163217880), (140, 148061934), (168, 123384945), (180, 115159282), (210, 98707956), (239, 86730840), (252, 82256630), (254, 81608940), (271, 76489560), (280, 74030967), (315, 65805304), (360, 57579641), (381, 54405960), (420, 49353978), (478, 43365420), (504, 41128315), (508, 40804470), (542, 38244780), (630, 32902652), (635, 32643576), (717, 28910280), (762, 27202980), (813, 25496520), (840, 24676989), (889, 23316840), (956, 21682710), (1016, 20402235), (1084, 19122390), (1143, 18135320), (1195, 17346168), (1260, 16451326), (1270, 16321788), (1355, 15297912), (1434, 14455140), (1524, 13601490), (1626, 12748260), (1673, 12390120), (1778, 11658420), (1897, 10927080), (1905, 10881192), (1912, 10841355), (2151, 9636760), (2168, 9561195), (2286, 9067660), (2390, 8673084), (2439, 8498840), (2520, 8225663), (2540, 8160894), (2667, 7772280), (2710, 7648956), (2868, 7227570), (3048, 6800745), (3252, 6374130), (3346, 6195060), (3556, 5829210), (3585, 5782056), (3794, 5463540), (3810, 5440596), (4065, 5099304), (4302, 4818380), (4445, 4663368), (4572, 4533830), (4780, 4336542), (4878, 4249420), (5019, 4130040), (5080, 4080447), (5334, 3886140), (5420, 3824478), (5691, 3642360), (5715, 3627064), (5736, 3613785), (6504, 3187065), (6692, 3097530), (7112, 2914605), (7170, 2891028), (7588, 2731770), (7620, 2720298), (8001, 2590760), (8130, 2549652), (8365, 2478024), (8604, 2409190), (8890, 2331684), (9144, 2266915), (9485, 2185416), (9560, 2168271), (9756, 2124710), (10038, 2065020), (10668, 1943070), (10755, 1927352), (10840, 1912239), (11382, 1821180), (11430, 1813532), (12195, 1699768), (13335, 1554456), (13384, 1548765), (14340, 1445514), (15057, 1376680), (15176, 1365885), (15240, 1360149), (16002, 1295380), (16260, 1274826), (16730, 1239012), (17073, 1214120), (17208, 1204595), (17780, 1165842), (18970, 1092708), (19512, 1062355), (20076, 1032510), (21336, 971535), (21510, 963676), (22764, 910590), (22860, 906766), (24390, 849884), (25095, 826008), (26670, 777228), (28455, 728472), (28680, 722757), (30114, 688340), (30353, 682920), (32004, 647690), (32520, 637413), (33460, 619506), (34146, 607060), (34417, 602280), (35560, 582921), (37940, 546354), (40005, 518152), (40152, 516255), (43020, 481838), (45528, 455295), (45720, 453383), (48780, 424942), (50190, 413004), (53340, 388614), (56910, 364236), (60228, 344170), (60706, 341460), (64008, 323845), (64769, 320040), (66920, 309753), (68292, 303530), (68834, 301140), (75285, 275336), (75880, 273177), (80010, 259076), (85365, 242824), (86040, 240919), (91059, 227640), (97560, 212471), (100380, 206502), (103251, 200760), (106680, 194307), (113820, 182118), (120456, 172085), (121412, 170730), (129538, 160020), (136584, 151765), (137668, 150570)]