20281457504

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{263}}^2$

素因数の和:578

約数の個数: 216

約数和(自身を含む): 53856123048

約数和(自身を除く): 33574665544

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 32, 34, 44, 49, 56, 68, 77, 88, 98, 112, 119, 136, 154, 176, 187, 196, 224, 238, 263, 272, 308, 352, 374, 392, 476, 526, 539, 544, 616, 748, 784, 833, 952, 1052, 1078, 1232, 1309, 1496, 1568, 1666, 1841, 1904, 2104, 2156, 2464, 2618, 2893, 2992, 3332, 3682, 3808, 4208, 4312, 4471, 5236, 5786, 5984, 6664, 7364, 8416, 8624, 8942, 9163, 10472, 11572, 12887, 13328, 14728, 17248, 17884, 18326, 20251, 20944, 23144, 25774, 26656, 29456, 31297, 35768, 36652, 40502, 41888, 46288, 49181, 51548, 58912, 62594, 69169, 71536, 73304, 81004, 92576, 98362, 103096, 125188, 138338, 141757, 143072, 146608, 162008, 196724, 206192, 219079, 250376, 276676, 283514, 293216, 324016, 344267, 393448, 412384, 438158, 484183, 500752, 553352, 567028, 648032, 688534, 760859, 786896, 876316, 968366, 1001504, 1106704, 1134056, 1175873, 1377068, 1521718, 1573792, 1752632, 1936732, 2213408, 2268112, 2351746, 2409869, 2754136, 3043436, 3389281, 3505264, 3873464, 4536224, 4703492, 4819738, 5326013, 5508272, 6086872, 6778562, 7010528, 7746928, 8231111, 9406984, 9639476, 10652026, 11016544, 12173744, 12934603, 13557124, 15493856, 16462222, 18813968, 19278952, 21304052, 24347488, 25869206, 27114248, 32924444, 37282091, 37627936, 38557904, 42608104, 51738412, 54228496, 57617777, 65848888, 74564182, 77115808, 85216208, 90542221, 103476824, 108456992, 115235554, 131697776, 149128364, 170432416, 181084442, 206953648, 230471108, 263395552, 298256728, 362168884, 413907296, 460942216, 596513456, 633795547, 724337768, 921884432, 1193026912, 1267591094, 1448675536, 1843768864, 2535182188, 2897351072, 5070364376, 10140728752, 20281457504]

約数ペア:

[(1, 20281457504), (2, 10140728752), (4, 5070364376), (7, 2897351072), (8, 2535182188), (11, 1843768864), (14, 1448675536), (16, 1267591094), (17, 1193026912), (22, 921884432), (28, 724337768), (32, 633795547), (34, 596513456), (44, 460942216), (49, 413907296), (56, 362168884), (68, 298256728), (77, 263395552), (88, 230471108), (98, 206953648), (112, 181084442), (119, 170432416), (136, 149128364), (154, 131697776), (176, 115235554), (187, 108456992), (196, 103476824), (224, 90542221), (238, 85216208), (263, 77115808), (272, 74564182), (308, 65848888), (352, 57617777), (374, 54228496), (392, 51738412), (476, 42608104), (526, 38557904), (539, 37627936), (544, 37282091), (616, 32924444), (748, 27114248), (784, 25869206), (833, 24347488), (952, 21304052), (1052, 19278952), (1078, 18813968), (1232, 16462222), (1309, 15493856), (1496, 13557124), (1568, 12934603), (1666, 12173744), (1841, 11016544), (1904, 10652026), (2104, 9639476), (2156, 9406984), (2464, 8231111), (2618, 7746928), (2893, 7010528), (2992, 6778562), (3332, 6086872), (3682, 5508272), (3808, 5326013), (4208, 4819738), (4312, 4703492), (4471, 4536224), (5236, 3873464), (5786, 3505264), (5984, 3389281), (6664, 3043436), (7364, 2754136), (8416, 2409869), (8624, 2351746), (8942, 2268112), (9163, 2213408), (10472, 1936732), (11572, 1752632), (12887, 1573792), (13328, 1521718), (14728, 1377068), (17248, 1175873), (17884, 1134056), (18326, 1106704), (20251, 1001504), (20944, 968366), (23144, 876316), (25774, 786896), (26656, 760859), (29456, 688534), (31297, 648032), (35768, 567028), (36652, 553352), (40502, 500752), (41888, 484183), (46288, 438158), (49181, 412384), (51548, 393448), (58912, 344267), (62594, 324016), (69169, 293216), (71536, 283514), (73304, 276676), (81004, 250376), (92576, 219079), (98362, 206192), (103096, 196724), (125188, 162008), (138338, 146608), (141757, 143072)]