399993984

素因数分解:

$2^7\times 3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:372

約数の個数: 256

約数和(自身を含む): 1319472000

約数和(自身を除く): 919478016

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 29, 32, 36, 39, 48, 52, 54, 58, 64, 72, 78, 87, 96, 104, 108, 116, 117, 128, 144, 156, 174, 192, 208, 216, 232, 234, 261, 288, 307, 312, 348, 351, 377, 384, 416, 432, 464, 468, 522, 576, 614, 624, 696, 702, 754, 783, 832, 864, 921, 928, 936, 1044, 1131, 1152, 1228, 1248, 1392, 1404, 1508, 1566, 1664, 1728, 1842, 1856, 1872, 2088, 2262, 2456, 2496, 2763, 2784, 2808, 3016, 3132, 3393, 3456, 3684, 3712, 3744, 3991, 4176, 4524, 4912, 4992, 5526, 5568, 5616, 6032, 6264, 6786, 7368, 7488, 7982, 8289, 8352, 8903, 9048, 9824, 10179, 11052, 11136, 11232, 11973, 12064, 12528, 13572, 14736, 14976, 15964, 16578, 16704, 17806, 18096, 19648, 20358, 22104, 22464, 23946, 24128, 25056, 26709, 27144, 29472, 31928, 33156, 33408, 35612, 35919, 36192, 39296, 40716, 44208, 44928, 47892, 48256, 50112, 53418, 54288, 58944, 63856, 66312, 71224, 71838, 72384, 80127, 81432, 88416, 95784, 100224, 106836, 107757, 108576, 115739, 117888, 127712, 132624, 142448, 143676, 144768, 160254, 162864, 176832, 191568, 213672, 215514, 217152, 231478, 240381, 255424, 265248, 284896, 287352, 320508, 325728, 347217, 353664, 383136, 427344, 431028, 434304, 462956, 480762, 510848, 530496, 569792, 574704, 641016, 651456, 694434, 766272, 854688, 862056, 925912, 961524, 1041651, 1060992, 1139584, 1149408, 1282032, 1302912, 1388868, 1532544, 1709376, 1724112, 1851824, 1923048, 2083302, 2298816, 2564064, 2777736, 3124953, 3418752, 3448224, 3703648, 3846096, 4166604, 4597632, 5128128, 5555472, 6249906, 6896448, 7407296, 7692192, 8333208, 10256256, 11110944, 12499812, 13792896, 14814592, 15384384, 16666416, 22221888, 24999624, 30768768, 33332832, 44443776, 49999248, 66665664, 99998496, 133331328, 199996992, 399993984]

約数ペア:

[(1, 399993984), (2, 199996992), (3, 133331328), (4, 99998496), (6, 66665664), (8, 49999248), (9, 44443776), (12, 33332832), (13, 30768768), (16, 24999624), (18, 22221888), (24, 16666416), (26, 15384384), (27, 14814592), (29, 13792896), (32, 12499812), (36, 11110944), (39, 10256256), (48, 8333208), (52, 7692192), (54, 7407296), (58, 6896448), (64, 6249906), (72, 5555472), (78, 5128128), (87, 4597632), (96, 4166604), (104, 3846096), (108, 3703648), (116, 3448224), (117, 3418752), (128, 3124953), (144, 2777736), (156, 2564064), (174, 2298816), (192, 2083302), (208, 1923048), (216, 1851824), (232, 1724112), (234, 1709376), (261, 1532544), (288, 1388868), (307, 1302912), (312, 1282032), (348, 1149408), (351, 1139584), (377, 1060992), (384, 1041651), (416, 961524), (432, 925912), (464, 862056), (468, 854688), (522, 766272), (576, 694434), (614, 651456), (624, 641016), (696, 574704), (702, 569792), (754, 530496), (783, 510848), (832, 480762), (864, 462956), (921, 434304), (928, 431028), (936, 427344), (1044, 383136), (1131, 353664), (1152, 347217), (1228, 325728), (1248, 320508), (1392, 287352), (1404, 284896), (1508, 265248), (1566, 255424), (1664, 240381), (1728, 231478), (1842, 217152), (1856, 215514), (1872, 213672), (2088, 191568), (2262, 176832), (2456, 162864), (2496, 160254), (2763, 144768), (2784, 143676), (2808, 142448), (3016, 132624), (3132, 127712), (3393, 117888), (3456, 115739), (3684, 108576), (3712, 107757), (3744, 106836), (3991, 100224), (4176, 95784), (4524, 88416), (4912, 81432), (4992, 80127), (5526, 72384), (5568, 71838), (5616, 71224), (6032, 66312), (6264, 63856), (6786, 58944), (7368, 54288), (7488, 53418), (7982, 50112), (8289, 48256), (8352, 47892), (8903, 44928), (9048, 44208), (9824, 40716), (10179, 39296), (11052, 36192), (11136, 35919), (11232, 35612), (11973, 33408), (12064, 33156), (12528, 31928), (13572, 29472), (14736, 27144), (14976, 26709), (15964, 25056), (16578, 24128), (16704, 23946), (17806, 22464), (18096, 22104), (19648, 20358)]