256543271456

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{317}}^1\times {\mathrm{727}}^1\times {\mathrm{809}}^1$

素因数の和:1906

約数の個数: 96

約数和(自身を含む): 519800561280

約数和(自身を除く): 263257289824

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 317, 344, 634, 688, 727, 809, 1268, 1376, 1454, 1618, 2536, 2908, 3236, 5072, 5816, 6472, 10144, 11632, 12944, 13631, 23264, 25888, 27262, 31261, 34787, 54524, 62522, 69574, 109048, 125044, 139148, 218096, 230459, 250088, 256453, 278296, 436192, 460918, 500176, 512906, 556592, 588143, 921836, 1000352, 1025812, 1113184, 1176286, 1843672, 2051624, 2352572, 3687344, 4103248, 4705144, 7374688, 8206496, 9410288, 9909737, 11027479, 18820576, 19819474, 22054958, 25290149, 39638948, 44109916, 50580298, 79277896, 88219832, 101160596, 158555792, 176439664, 186441331, 202321192, 317111584, 352879328, 372882662, 404642384, 745765324, 809284768, 1491530648, 2983061296, 5966122592, 8016977233, 16033954466, 32067908932, 64135817864, 128271635728, 256543271456]

約数ペア:

[(1, 256543271456), (2, 128271635728), (4, 64135817864), (8, 32067908932), (16, 16033954466), (32, 8016977233), (43, 5966122592), (86, 2983061296), (172, 1491530648), (317, 809284768), (344, 745765324), (634, 404642384), (688, 372882662), (727, 352879328), (809, 317111584), (1268, 202321192), (1376, 186441331), (1454, 176439664), (1618, 158555792), (2536, 101160596), (2908, 88219832), (3236, 79277896), (5072, 50580298), (5816, 44109916), (6472, 39638948), (10144, 25290149), (11632, 22054958), (12944, 19819474), (13631, 18820576), (23264, 11027479), (25888, 9909737), (27262, 9410288), (31261, 8206496), (34787, 7374688), (54524, 4705144), (62522, 4103248), (69574, 3687344), (109048, 2352572), (125044, 2051624), (139148, 1843672), (218096, 1176286), (230459, 1113184), (250088, 1025812), (256453, 1000352), (278296, 921836), (436192, 588143), (460918, 556592), (500176, 512906)]