261993984

素因数分解:

$2^9\times 3^1\times 7^2\times {\mathrm{59}}^2$

素因数の和:153

約数の個数: 180

約数和(自身を含む): 825917004

約数和(自身を除く): 563923020

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 49, 56, 59, 64, 84, 96, 98, 112, 118, 128, 147, 168, 177, 192, 196, 224, 236, 256, 294, 336, 354, 384, 392, 413, 448, 472, 512, 588, 672, 708, 768, 784, 826, 896, 944, 1176, 1239, 1344, 1416, 1536, 1568, 1652, 1792, 1888, 2352, 2478, 2688, 2832, 2891, 3136, 3304, 3481, 3584, 3776, 4704, 4956, 5376, 5664, 5782, 6272, 6608, 6962, 7552, 8673, 9408, 9912, 10443, 10752, 11328, 11564, 12544, 13216, 13924, 15104, 17346, 18816, 19824, 20886, 22656, 23128, 24367, 25088, 26432, 27848, 30208, 34692, 37632, 39648, 41772, 45312, 46256, 48734, 52864, 55696, 69384, 73101, 75264, 79296, 83544, 90624, 92512, 97468, 105728, 111392, 138768, 146202, 158592, 167088, 170569, 185024, 194936, 211456, 222784, 277536, 292404, 317184, 334176, 341138, 370048, 389872, 445568, 511707, 555072, 584808, 634368, 668352, 682276, 740096, 779744, 891136, 1023414, 1110144, 1169616, 1336704, 1364552, 1480192, 1559488, 1782272, 2046828, 2220288, 2339232, 2673408, 2729104, 3118976, 4093656, 4440576, 4678464, 5346816, 5458208, 6237952, 8187312, 9356928, 10916416, 12475904, 16374624, 18713856, 21832832, 32749248, 37427712, 43665664, 65498496, 87331328, 130996992, 261993984]

約数ペア:

[(1, 261993984), (2, 130996992), (3, 87331328), (4, 65498496), (6, 43665664), (7, 37427712), (8, 32749248), (12, 21832832), (14, 18713856), (16, 16374624), (21, 12475904), (24, 10916416), (28, 9356928), (32, 8187312), (42, 6237952), (48, 5458208), (49, 5346816), (56, 4678464), (59, 4440576), (64, 4093656), (84, 3118976), (96, 2729104), (98, 2673408), (112, 2339232), (118, 2220288), (128, 2046828), (147, 1782272), (168, 1559488), (177, 1480192), (192, 1364552), (196, 1336704), (224, 1169616), (236, 1110144), (256, 1023414), (294, 891136), (336, 779744), (354, 740096), (384, 682276), (392, 668352), (413, 634368), (448, 584808), (472, 555072), (512, 511707), (588, 445568), (672, 389872), (708, 370048), (768, 341138), (784, 334176), (826, 317184), (896, 292404), (944, 277536), (1176, 222784), (1239, 211456), (1344, 194936), (1416, 185024), (1536, 170569), (1568, 167088), (1652, 158592), (1792, 146202), (1888, 138768), (2352, 111392), (2478, 105728), (2688, 97468), (2832, 92512), (2891, 90624), (3136, 83544), (3304, 79296), (3481, 75264), (3584, 73101), (3776, 69384), (4704, 55696), (4956, 52864), (5376, 48734), (5664, 46256), (5782, 45312), (6272, 41772), (6608, 39648), (6962, 37632), (7552, 34692), (8673, 30208), (9408, 27848), (9912, 26432), (10443, 25088), (10752, 24367), (11328, 23128), (11564, 22656), (12544, 20886), (13216, 19824), (13924, 18816), (15104, 17346)]