20781208448

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{2749}}^1$

素因数の和:2853

約数の個数: 256

約数和(自身を含む): 56548800000

約数和(自身を除く): 35767591552

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 52, 56, 59, 64, 77, 88, 91, 104, 112, 118, 128, 143, 154, 176, 182, 208, 224, 236, 286, 308, 352, 364, 413, 416, 448, 472, 572, 616, 649, 704, 728, 767, 826, 832, 896, 944, 1001, 1144, 1232, 1298, 1408, 1456, 1534, 1652, 1664, 1888, 2002, 2288, 2464, 2596, 2749, 2912, 3068, 3304, 3776, 4004, 4543, 4576, 4928, 5192, 5369, 5498, 5824, 6136, 6608, 7552, 8008, 8437, 9086, 9152, 9856, 10384, 10738, 10996, 11648, 12272, 13216, 16016, 16874, 18172, 18304, 19243, 20768, 21476, 21992, 24544, 26432, 30239, 32032, 33748, 35737, 36344, 38486, 41536, 42952, 43984, 49088, 52864, 59059, 60478, 64064, 67496, 71474, 72688, 76972, 83072, 85904, 87968, 98176, 118118, 120956, 128128, 134992, 142948, 145376, 153944, 162191, 171808, 175936, 211673, 236236, 241912, 250159, 269984, 285896, 290752, 307888, 324382, 343616, 351872, 393107, 423346, 472472, 483824, 500318, 539968, 571792, 581504, 615776, 648764, 687232, 786214, 846692, 944944, 967648, 1000636, 1079936, 1135337, 1143584, 1231552, 1297528, 1572428, 1693384, 1784101, 1889888, 1935296, 2001272, 2108483, 2270674, 2287168, 2463104, 2595056, 2751749, 3144856, 3386768, 3568202, 3779776, 3870592, 4002544, 4216966, 4541348, 4574336, 5190112, 5503498, 6289712, 6773536, 7136404, 7559552, 8005088, 8433932, 9082696, 10380224, 11006996, 12488707, 12579424, 13547072, 14272808, 14759381, 16010176, 16867864, 18165392, 20760448, 22013992, 23193313, 24977414, 25158848, 27094144, 28545616, 29518762, 32020352, 33735728, 36330784, 44027984, 46386626, 49954828, 50317696, 57091232, 59037524, 67471456, 72661568, 88055968, 92773252, 99909656, 114182464, 118075048, 134942912, 145323136, 162353191, 176111936, 185546504, 199819312, 228364928, 236150096, 269885824, 324706382, 352223872, 371093008, 399638624, 472300192, 649412764, 742186016, 799277248, 944600384, 1298825528, 1484372032, 1598554496, 1889200768, 2597651056, 2968744064, 5195302112, 10390604224, 20781208448]

約数ペア:

[(1, 20781208448), (2, 10390604224), (4, 5195302112), (7, 2968744064), (8, 2597651056), (11, 1889200768), (13, 1598554496), (14, 1484372032), (16, 1298825528), (22, 944600384), (26, 799277248), (28, 742186016), (32, 649412764), (44, 472300192), (52, 399638624), (56, 371093008), (59, 352223872), (64, 324706382), (77, 269885824), (88, 236150096), (91, 228364928), (104, 199819312), (112, 185546504), (118, 176111936), (128, 162353191), (143, 145323136), (154, 134942912), (176, 118075048), (182, 114182464), (208, 99909656), (224, 92773252), (236, 88055968), (286, 72661568), (308, 67471456), (352, 59037524), (364, 57091232), (413, 50317696), (416, 49954828), (448, 46386626), (472, 44027984), (572, 36330784), (616, 33735728), (649, 32020352), (704, 29518762), (728, 28545616), (767, 27094144), (826, 25158848), (832, 24977414), (896, 23193313), (944, 22013992), (1001, 20760448), (1144, 18165392), (1232, 16867864), (1298, 16010176), (1408, 14759381), (1456, 14272808), (1534, 13547072), (1652, 12579424), (1664, 12488707), (1888, 11006996), (2002, 10380224), (2288, 9082696), (2464, 8433932), (2596, 8005088), (2749, 7559552), (2912, 7136404), (3068, 6773536), (3304, 6289712), (3776, 5503498), (4004, 5190112), (4543, 4574336), (4576, 4541348), (4928, 4216966), (5192, 4002544), (5369, 3870592), (5498, 3779776), (5824, 3568202), (6136, 3386768), (6608, 3144856), (7552, 2751749), (8008, 2595056), (8437, 2463104), (9086, 2287168), (9152, 2270674), (9856, 2108483), (10384, 2001272), (10738, 1935296), (10996, 1889888), (11648, 1784101), (12272, 1693384), (13216, 1572428), (16016, 1297528), (16874, 1231552), (18172, 1143584), (18304, 1135337), (19243, 1079936), (20768, 1000636), (21476, 967648), (21992, 944944), (24544, 846692), (26432, 786214), (30239, 687232), (32032, 648764), (33748, 615776), (35737, 581504), (36344, 571792), (38486, 539968), (41536, 500318), (42952, 483824), (43984, 472472), (49088, 423346), (52864, 393107), (59059, 351872), (60478, 343616), (64064, 324382), (67496, 307888), (71474, 290752), (72688, 285896), (76972, 269984), (83072, 250159), (85904, 241912), (87968, 236236), (98176, 211673), (118118, 175936), (120956, 171808), (128128, 162191), (134992, 153944), (142948, 145376)]