256798464

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 216

約数和(自身を含む): 790660080

約数和(自身を除く): 533861616

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 17, 24, 26, 32, 34, 39, 48, 51, 52, 64, 68, 78, 89, 96, 102, 104, 128, 136, 156, 178, 192, 204, 208, 221, 256, 267, 272, 289, 312, 356, 384, 408, 416, 442, 534, 544, 578, 624, 663, 712, 768, 816, 832, 867, 884, 1068, 1088, 1156, 1157, 1248, 1326, 1424, 1513, 1632, 1664, 1734, 1768, 2136, 2176, 2312, 2314, 2496, 2652, 2848, 3026, 3264, 3328, 3468, 3471, 3536, 3757, 4272, 4352, 4539, 4624, 4628, 4992, 5304, 5696, 6052, 6528, 6936, 6942, 7072, 7514, 8544, 9078, 9248, 9256, 9984, 10608, 11271, 11392, 12104, 13056, 13872, 13884, 14144, 15028, 17088, 18156, 18496, 18512, 19669, 21216, 22542, 22784, 24208, 25721, 27744, 27768, 28288, 30056, 34176, 36312, 36992, 37024, 39338, 42432, 45084, 48416, 51442, 55488, 55536, 56576, 59007, 60112, 68352, 72624, 73984, 74048, 77163, 78676, 84864, 90168, 96832, 102884, 110976, 111072, 118014, 120224, 145248, 148096, 154326, 157352, 169728, 180336, 193664, 205768, 221952, 222144, 236028, 240448, 290496, 296192, 308652, 314704, 334373, 360672, 387328, 411536, 444288, 472056, 480896, 580992, 617304, 629408, 668746, 721344, 823072, 888576, 944112, 961792, 1003119, 1161984, 1234608, 1258816, 1337492, 1442688, 1646144, 1888224, 2006238, 2469216, 2517632, 2674984, 2885376, 3292288, 3776448, 4012476, 4938432, 5035264, 5349968, 6584576, 7552896, 8024952, 9876864, 10699936, 15105792, 16049904, 19753728, 21399872, 32099808, 42799744, 64199616, 85599488, 128399232, 256798464]

約数ペア:

[(1, 256798464), (2, 128399232), (3, 85599488), (4, 64199616), (6, 42799744), (8, 32099808), (12, 21399872), (13, 19753728), (16, 16049904), (17, 15105792), (24, 10699936), (26, 9876864), (32, 8024952), (34, 7552896), (39, 6584576), (48, 5349968), (51, 5035264), (52, 4938432), (64, 4012476), (68, 3776448), (78, 3292288), (89, 2885376), (96, 2674984), (102, 2517632), (104, 2469216), (128, 2006238), (136, 1888224), (156, 1646144), (178, 1442688), (192, 1337492), (204, 1258816), (208, 1234608), (221, 1161984), (256, 1003119), (267, 961792), (272, 944112), (289, 888576), (312, 823072), (356, 721344), (384, 668746), (408, 629408), (416, 617304), (442, 580992), (534, 480896), (544, 472056), (578, 444288), (624, 411536), (663, 387328), (712, 360672), (768, 334373), (816, 314704), (832, 308652), (867, 296192), (884, 290496), (1068, 240448), (1088, 236028), (1156, 222144), (1157, 221952), (1248, 205768), (1326, 193664), (1424, 180336), (1513, 169728), (1632, 157352), (1664, 154326), (1734, 148096), (1768, 145248), (2136, 120224), (2176, 118014), (2312, 111072), (2314, 110976), (2496, 102884), (2652, 96832), (2848, 90168), (3026, 84864), (3264, 78676), (3328, 77163), (3468, 74048), (3471, 73984), (3536, 72624), (3757, 68352), (4272, 60112), (4352, 59007), (4539, 56576), (4624, 55536), (4628, 55488), (4992, 51442), (5304, 48416), (5696, 45084), (6052, 42432), (6528, 39338), (6936, 37024), (6942, 36992), (7072, 36312), (7514, 34176), (8544, 30056), (9078, 28288), (9248, 27768), (9256, 27744), (9984, 25721), (10608, 24208), (11271, 22784), (11392, 22542), (12104, 21216), (13056, 19669), (13872, 18512), (13884, 18496), (14144, 18156), (15028, 17088)]