256057984

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 671976000

約数和(自身を除く): 415918016

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 32, 38, 52, 56, 64, 76, 89, 91, 104, 112, 128, 133, 152, 169, 178, 182, 208, 224, 247, 266, 304, 338, 356, 364, 416, 448, 494, 532, 608, 623, 676, 712, 728, 832, 896, 988, 1064, 1157, 1183, 1216, 1246, 1352, 1424, 1456, 1664, 1691, 1729, 1976, 2128, 2314, 2366, 2432, 2492, 2704, 2848, 2912, 3211, 3382, 3458, 3952, 4256, 4628, 4732, 4984, 5408, 5696, 5824, 6422, 6764, 6916, 7904, 8099, 8512, 9256, 9464, 9968, 10816, 11392, 11648, 11837, 12844, 13528, 13832, 15041, 15808, 16198, 17024, 18512, 18928, 19936, 21632, 21983, 22477, 23674, 25688, 27056, 27664, 30082, 31616, 32396, 37024, 37856, 39872, 43966, 44954, 47348, 51376, 54112, 55328, 60164, 64792, 74048, 75712, 79744, 87932, 89908, 94696, 102752, 105287, 108224, 110656, 120328, 129584, 148096, 151424, 153881, 175864, 179816, 189392, 205504, 210574, 216448, 221312, 240656, 259168, 285779, 307762, 351728, 359632, 378784, 411008, 421148, 481312, 518336, 571558, 615524, 703456, 719264, 757568, 842296, 962624, 1036672, 1143116, 1231048, 1406912, 1438528, 1515136, 1684592, 1925248, 2000453, 2286232, 2462096, 2813824, 2877056, 3369184, 4000906, 4572464, 4924192, 6738368, 8001812, 9144928, 9848384, 13476736, 16003624, 18289856, 19696768, 32007248, 36579712, 64014496, 128028992, 256057984]

約数ペア:

[(1, 256057984), (2, 128028992), (4, 64014496), (7, 36579712), (8, 32007248), (13, 19696768), (14, 18289856), (16, 16003624), (19, 13476736), (26, 9848384), (28, 9144928), (32, 8001812), (38, 6738368), (52, 4924192), (56, 4572464), (64, 4000906), (76, 3369184), (89, 2877056), (91, 2813824), (104, 2462096), (112, 2286232), (128, 2000453), (133, 1925248), (152, 1684592), (169, 1515136), (178, 1438528), (182, 1406912), (208, 1231048), (224, 1143116), (247, 1036672), (266, 962624), (304, 842296), (338, 757568), (356, 719264), (364, 703456), (416, 615524), (448, 571558), (494, 518336), (532, 481312), (608, 421148), (623, 411008), (676, 378784), (712, 359632), (728, 351728), (832, 307762), (896, 285779), (988, 259168), (1064, 240656), (1157, 221312), (1183, 216448), (1216, 210574), (1246, 205504), (1352, 189392), (1424, 179816), (1456, 175864), (1664, 153881), (1691, 151424), (1729, 148096), (1976, 129584), (2128, 120328), (2314, 110656), (2366, 108224), (2432, 105287), (2492, 102752), (2704, 94696), (2848, 89908), (2912, 87932), (3211, 79744), (3382, 75712), (3458, 74048), (3952, 64792), (4256, 60164), (4628, 55328), (4732, 54112), (4984, 51376), (5408, 47348), (5696, 44954), (5824, 43966), (6422, 39872), (6764, 37856), (6916, 37024), (7904, 32396), (8099, 31616), (8512, 30082), (9256, 27664), (9464, 27056), (9968, 25688), (10816, 23674), (11392, 22477), (11648, 21983), (11837, 21632), (12844, 19936), (13528, 18928), (13832, 18512), (15041, 17024), (15808, 16198)]