640581312

素因数分解:

$2^6\times 3^1\times 7^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:244

約数の個数: 224

約数和(自身を含む): 2018995200

約数和(自身を除く): 1378413888

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 49, 56, 64, 71, 84, 96, 98, 112, 137, 142, 147, 168, 192, 196, 213, 224, 274, 284, 294, 336, 343, 392, 411, 426, 448, 497, 548, 568, 588, 672, 686, 784, 822, 852, 959, 994, 1029, 1096, 1136, 1176, 1344, 1372, 1491, 1568, 1644, 1704, 1918, 1988, 2058, 2192, 2272, 2352, 2744, 2877, 2982, 3136, 3288, 3408, 3479, 3836, 3976, 4116, 4384, 4544, 4704, 5488, 5754, 5964, 6576, 6713, 6816, 6958, 7672, 7952, 8232, 8768, 9408, 9727, 10437, 10976, 11508, 11928, 13152, 13426, 13632, 13916, 15344, 15904, 16464, 19454, 20139, 20874, 21952, 23016, 23856, 24353, 26304, 26852, 27832, 29181, 30688, 31808, 32928, 38908, 40278, 41748, 46032, 46991, 47712, 48706, 53704, 55664, 58362, 61376, 65856, 68089, 73059, 77816, 80556, 83496, 92064, 93982, 95424, 97412, 107408, 111328, 116724, 136178, 140973, 146118, 155632, 161112, 166992, 184128, 187964, 194824, 204267, 214816, 222656, 233448, 272356, 281946, 292236, 311264, 322224, 333984, 375928, 389648, 408534, 429632, 466896, 476623, 544712, 563892, 584472, 622528, 644448, 667968, 751856, 779296, 817068, 933792, 953246, 1089424, 1127784, 1168944, 1288896, 1429869, 1503712, 1558592, 1634136, 1867584, 1906492, 2178848, 2255568, 2337888, 2859738, 3007424, 3268272, 3336361, 3812984, 4357696, 4511136, 4675776, 5719476, 6536544, 6672722, 7625968, 9022272, 10009083, 11438952, 13073088, 13345444, 15251936, 20018166, 22877904, 26690888, 30503872, 40036332, 45755808, 53381776, 80072664, 91511616, 106763552, 160145328, 213527104, 320290656, 640581312]

約数ペア:

[(1, 640581312), (2, 320290656), (3, 213527104), (4, 160145328), (6, 106763552), (7, 91511616), (8, 80072664), (12, 53381776), (14, 45755808), (16, 40036332), (21, 30503872), (24, 26690888), (28, 22877904), (32, 20018166), (42, 15251936), (48, 13345444), (49, 13073088), (56, 11438952), (64, 10009083), (71, 9022272), (84, 7625968), (96, 6672722), (98, 6536544), (112, 5719476), (137, 4675776), (142, 4511136), (147, 4357696), (168, 3812984), (192, 3336361), (196, 3268272), (213, 3007424), (224, 2859738), (274, 2337888), (284, 2255568), (294, 2178848), (336, 1906492), (343, 1867584), (392, 1634136), (411, 1558592), (426, 1503712), (448, 1429869), (497, 1288896), (548, 1168944), (568, 1127784), (588, 1089424), (672, 953246), (686, 933792), (784, 817068), (822, 779296), (852, 751856), (959, 667968), (994, 644448), (1029, 622528), (1096, 584472), (1136, 563892), (1176, 544712), (1344, 476623), (1372, 466896), (1491, 429632), (1568, 408534), (1644, 389648), (1704, 375928), (1918, 333984), (1988, 322224), (2058, 311264), (2192, 292236), (2272, 281946), (2352, 272356), (2744, 233448), (2877, 222656), (2982, 214816), (3136, 204267), (3288, 194824), (3408, 187964), (3479, 184128), (3836, 166992), (3976, 161112), (4116, 155632), (4384, 146118), (4544, 140973), (4704, 136178), (5488, 116724), (5754, 111328), (5964, 107408), (6576, 97412), (6713, 95424), (6816, 93982), (6958, 92064), (7672, 83496), (7952, 80556), (8232, 77816), (8768, 73059), (9408, 68089), (9727, 65856), (10437, 61376), (10976, 58362), (11508, 55664), (11928, 53704), (13152, 48706), (13426, 47712), (13632, 46991), (13916, 46032), (15344, 41748), (15904, 40278), (16464, 38908), (19454, 32928), (20139, 31808), (20874, 30688), (21952, 29181), (23016, 27832), (23856, 26852), (24353, 26304)]