256501728

素因数分解:

$2^5\times 3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:307

約数の個数: 240

約数和(自身を含む): 879145344

約数和(自身を除く): 622643616

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 54, 56, 63, 67, 72, 81, 84, 96, 108, 112, 126, 134, 144, 162, 168, 189, 201, 211, 216, 224, 252, 268, 288, 324, 336, 378, 402, 422, 432, 469, 504, 536, 567, 603, 633, 648, 672, 756, 804, 844, 864, 938, 1008, 1072, 1134, 1206, 1266, 1296, 1407, 1477, 1512, 1608, 1688, 1809, 1876, 1899, 2016, 2144, 2268, 2412, 2532, 2592, 2814, 2954, 3024, 3216, 3376, 3618, 3752, 3798, 4221, 4431, 4536, 4824, 5064, 5427, 5628, 5697, 5908, 6048, 6432, 6752, 7236, 7504, 7596, 8442, 8862, 9072, 9648, 10128, 10854, 11256, 11394, 11816, 12663, 13293, 14137, 14472, 15008, 15192, 16884, 17091, 17724, 18144, 19296, 20256, 21708, 22512, 22788, 23632, 25326, 26586, 28274, 28944, 30384, 33768, 34182, 35448, 37989, 39879, 42411, 43416, 45024, 45576, 47264, 50652, 53172, 56548, 57888, 60768, 67536, 68364, 70896, 75978, 79758, 84822, 86832, 91152, 98959, 101304, 106344, 113096, 119637, 127233, 135072, 136728, 141792, 151956, 159516, 169644, 173664, 182304, 197918, 202608, 212688, 226192, 239274, 254466, 273456, 296877, 303912, 319032, 339288, 381699, 395836, 405216, 425376, 452384, 478548, 508932, 546912, 593754, 607824, 638064, 678576, 763398, 791672, 890631, 957096, 1017864, 1145097, 1187508, 1215648, 1276128, 1357152, 1526796, 1583344, 1781262, 1914192, 2035728, 2290194, 2375016, 2671893, 3053592, 3166688, 3562524, 3828384, 4071456, 4580388, 4750032, 5343786, 6107184, 7125048, 8015679, 9160776, 9500064, 10687572, 12214368, 14250096, 16031358, 18321552, 21375144, 28500192, 32062716, 36643104, 42750288, 64125432, 85500576, 128250864, 256501728]

約数ペア:

[(1, 256501728), (2, 128250864), (3, 85500576), (4, 64125432), (6, 42750288), (7, 36643104), (8, 32062716), (9, 28500192), (12, 21375144), (14, 18321552), (16, 16031358), (18, 14250096), (21, 12214368), (24, 10687572), (27, 9500064), (28, 9160776), (32, 8015679), (36, 7125048), (42, 6107184), (48, 5343786), (54, 4750032), (56, 4580388), (63, 4071456), (67, 3828384), (72, 3562524), (81, 3166688), (84, 3053592), (96, 2671893), (108, 2375016), (112, 2290194), (126, 2035728), (134, 1914192), (144, 1781262), (162, 1583344), (168, 1526796), (189, 1357152), (201, 1276128), (211, 1215648), (216, 1187508), (224, 1145097), (252, 1017864), (268, 957096), (288, 890631), (324, 791672), (336, 763398), (378, 678576), (402, 638064), (422, 607824), (432, 593754), (469, 546912), (504, 508932), (536, 478548), (567, 452384), (603, 425376), (633, 405216), (648, 395836), (672, 381699), (756, 339288), (804, 319032), (844, 303912), (864, 296877), (938, 273456), (1008, 254466), (1072, 239274), (1134, 226192), (1206, 212688), (1266, 202608), (1296, 197918), (1407, 182304), (1477, 173664), (1512, 169644), (1608, 159516), (1688, 151956), (1809, 141792), (1876, 136728), (1899, 135072), (2016, 127233), (2144, 119637), (2268, 113096), (2412, 106344), (2532, 101304), (2592, 98959), (2814, 91152), (2954, 86832), (3024, 84822), (3216, 79758), (3376, 75978), (3618, 70896), (3752, 68364), (3798, 67536), (4221, 60768), (4431, 57888), (4536, 56548), (4824, 53172), (5064, 50652), (5427, 47264), (5628, 45576), (5697, 45024), (5908, 43416), (6048, 42411), (6432, 39879), (6752, 37989), (7236, 35448), (7504, 34182), (7596, 33768), (8442, 30384), (8862, 28944), (9072, 28274), (9648, 26586), (10128, 25326), (10854, 23632), (11256, 22788), (11394, 22512), (11816, 21708), (12663, 20256), (13293, 19296), (14137, 18144), (14472, 17724), (15008, 17091), (15192, 16884)]