638777664

素因数分解:

$2^6\times 3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{607}}^1$

素因数の和:667

約数の個数: 280

約数和(自身を含む): 2242352640

約数和(自身を除く): 1603574976

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 29, 32, 36, 42, 48, 54, 56, 58, 63, 64, 72, 81, 84, 87, 96, 108, 112, 116, 126, 144, 162, 168, 174, 189, 192, 203, 216, 224, 232, 252, 261, 288, 324, 336, 348, 378, 406, 432, 448, 464, 504, 522, 567, 576, 607, 609, 648, 672, 696, 756, 783, 812, 864, 928, 1008, 1044, 1134, 1214, 1218, 1296, 1344, 1392, 1512, 1566, 1624, 1728, 1821, 1827, 1856, 2016, 2088, 2268, 2349, 2428, 2436, 2592, 2784, 3024, 3132, 3248, 3642, 3654, 4032, 4176, 4249, 4536, 4698, 4856, 4872, 5184, 5463, 5481, 5568, 6048, 6264, 6496, 7284, 7308, 8352, 8498, 9072, 9396, 9712, 9744, 10926, 10962, 12096, 12528, 12747, 12992, 14568, 14616, 16389, 16443, 16704, 16996, 17603, 18144, 18792, 19424, 19488, 21852, 21924, 25056, 25494, 29136, 29232, 32778, 32886, 33992, 35206, 36288, 37584, 38241, 38848, 38976, 43704, 43848, 49167, 50112, 50988, 52809, 58272, 58464, 65556, 65772, 67984, 70412, 75168, 76482, 87408, 87696, 98334, 101976, 105618, 114723, 116544, 116928, 123221, 131112, 131544, 135968, 140824, 150336, 152964, 158427, 174816, 175392, 196668, 203952, 211236, 229446, 246442, 262224, 263088, 271936, 281648, 305928, 316854, 344169, 349632, 350784, 369663, 393336, 407904, 422472, 458892, 475281, 492884, 524448, 526176, 563296, 611856, 633708, 688338, 739326, 786672, 815808, 844944, 917784, 950562, 985768, 1048896, 1052352, 1108989, 1126592, 1223712, 1267416, 1376676, 1425843, 1478652, 1573344, 1689888, 1835568, 1901124, 1971536, 2217978, 2447424, 2534832, 2753352, 2851686, 2957304, 3146688, 3326967, 3379776, 3671136, 3802248, 3943072, 4435956, 5069664, 5506704, 5703372, 5914608, 6653934, 7342272, 7604496, 7886144, 8871912, 9980901, 10139328, 11013408, 11406744, 11829216, 13307868, 15208992, 17743824, 19961802, 22026816, 22813488, 23658432, 26615736, 30417984, 35487648, 39923604, 45626976, 53231472, 70975296, 79847208, 91253952, 106462944, 159694416, 212925888, 319388832, 638777664]

約数ペア:

[(1, 638777664), (2, 319388832), (3, 212925888), (4, 159694416), (6, 106462944), (7, 91253952), (8, 79847208), (9, 70975296), (12, 53231472), (14, 45626976), (16, 39923604), (18, 35487648), (21, 30417984), (24, 26615736), (27, 23658432), (28, 22813488), (29, 22026816), (32, 19961802), (36, 17743824), (42, 15208992), (48, 13307868), (54, 11829216), (56, 11406744), (58, 11013408), (63, 10139328), (64, 9980901), (72, 8871912), (81, 7886144), (84, 7604496), (87, 7342272), (96, 6653934), (108, 5914608), (112, 5703372), (116, 5506704), (126, 5069664), (144, 4435956), (162, 3943072), (168, 3802248), (174, 3671136), (189, 3379776), (192, 3326967), (203, 3146688), (216, 2957304), (224, 2851686), (232, 2753352), (252, 2534832), (261, 2447424), (288, 2217978), (324, 1971536), (336, 1901124), (348, 1835568), (378, 1689888), (406, 1573344), (432, 1478652), (448, 1425843), (464, 1376676), (504, 1267416), (522, 1223712), (567, 1126592), (576, 1108989), (607, 1052352), (609, 1048896), (648, 985768), (672, 950562), (696, 917784), (756, 844944), (783, 815808), (812, 786672), (864, 739326), (928, 688338), (1008, 633708), (1044, 611856), (1134, 563296), (1214, 526176), (1218, 524448), (1296, 492884), (1344, 475281), (1392, 458892), (1512, 422472), (1566, 407904), (1624, 393336), (1728, 369663), (1821, 350784), (1827, 349632), (1856, 344169), (2016, 316854), (2088, 305928), (2268, 281648), (2349, 271936), (2428, 263088), (2436, 262224), (2592, 246442), (2784, 229446), (3024, 211236), (3132, 203952), (3248, 196668), (3642, 175392), (3654, 174816), (4032, 158427), (4176, 152964), (4249, 150336), (4536, 140824), (4698, 135968), (4856, 131544), (4872, 131112), (5184, 123221), (5463, 116928), (5481, 116544), (5568, 114723), (6048, 105618), (6264, 101976), (6496, 98334), (7284, 87696), (7308, 87408), (8352, 76482), (8498, 75168), (9072, 70412), (9396, 67984), (9712, 65772), (9744, 65556), (10926, 58464), (10962, 58272), (12096, 52809), (12528, 50988), (12747, 50112), (12992, 49167), (14568, 43848), (14616, 43704), (16389, 38976), (16443, 38848), (16704, 38241), (16996, 37584), (17603, 36288), (18144, 35206), (18792, 33992), (19424, 32886), (19488, 32778), (21852, 29232), (21924, 29136), (25056, 25494)]