256720128

素因数分解:

$2^8\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^2$

素因数の和:149

約数の個数: 216

約数和(自身を含む): 842683968

約数和(自身を除く): 585963840

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 21, 24, 28, 32, 34, 42, 48, 51, 53, 56, 64, 68, 84, 96, 102, 106, 112, 119, 128, 136, 159, 168, 192, 204, 212, 224, 238, 256, 272, 318, 336, 357, 371, 384, 408, 424, 448, 476, 544, 636, 672, 714, 742, 768, 816, 848, 896, 901, 952, 1088, 1113, 1272, 1344, 1428, 1484, 1632, 1696, 1792, 1802, 1904, 2176, 2226, 2544, 2688, 2703, 2809, 2856, 2968, 3264, 3392, 3604, 3808, 4352, 4452, 5088, 5376, 5406, 5618, 5712, 5936, 6307, 6528, 6784, 7208, 7616, 8427, 8904, 10176, 10812, 11236, 11424, 11872, 12614, 13056, 13568, 14416, 15232, 16854, 17808, 18921, 19663, 20352, 21624, 22472, 22848, 23744, 25228, 28832, 30464, 33708, 35616, 37842, 39326, 40704, 43248, 44944, 45696, 47488, 47753, 50456, 57664, 58989, 67416, 71232, 75684, 78652, 86496, 89888, 91392, 94976, 95506, 100912, 115328, 117978, 134832, 142464, 143259, 151368, 157304, 172992, 179776, 191012, 201824, 230656, 235956, 269664, 284928, 286518, 302736, 314608, 334271, 345984, 359552, 382024, 403648, 471912, 539328, 573036, 605472, 629216, 668542, 691968, 719104, 764048, 807296, 943824, 1002813, 1078656, 1146072, 1210944, 1258432, 1337084, 1528096, 1614592, 1887648, 2005626, 2157312, 2292144, 2421888, 2516864, 2674168, 3056192, 3775296, 4011252, 4584288, 4843776, 5033728, 5348336, 6112384, 7550592, 8022504, 9168576, 10696672, 12224768, 15101184, 16045008, 18337152, 21393344, 32090016, 36674304, 42786688, 64180032, 85573376, 128360064, 256720128]

約数ペア:

[(1, 256720128), (2, 128360064), (3, 85573376), (4, 64180032), (6, 42786688), (7, 36674304), (8, 32090016), (12, 21393344), (14, 18337152), (16, 16045008), (17, 15101184), (21, 12224768), (24, 10696672), (28, 9168576), (32, 8022504), (34, 7550592), (42, 6112384), (48, 5348336), (51, 5033728), (53, 4843776), (56, 4584288), (64, 4011252), (68, 3775296), (84, 3056192), (96, 2674168), (102, 2516864), (106, 2421888), (112, 2292144), (119, 2157312), (128, 2005626), (136, 1887648), (159, 1614592), (168, 1528096), (192, 1337084), (204, 1258432), (212, 1210944), (224, 1146072), (238, 1078656), (256, 1002813), (272, 943824), (318, 807296), (336, 764048), (357, 719104), (371, 691968), (384, 668542), (408, 629216), (424, 605472), (448, 573036), (476, 539328), (544, 471912), (636, 403648), (672, 382024), (714, 359552), (742, 345984), (768, 334271), (816, 314608), (848, 302736), (896, 286518), (901, 284928), (952, 269664), (1088, 235956), (1113, 230656), (1272, 201824), (1344, 191012), (1428, 179776), (1484, 172992), (1632, 157304), (1696, 151368), (1792, 143259), (1802, 142464), (1904, 134832), (2176, 117978), (2226, 115328), (2544, 100912), (2688, 95506), (2703, 94976), (2809, 91392), (2856, 89888), (2968, 86496), (3264, 78652), (3392, 75684), (3604, 71232), (3808, 67416), (4352, 58989), (4452, 57664), (5088, 50456), (5376, 47753), (5406, 47488), (5618, 45696), (5712, 44944), (5936, 43248), (6307, 40704), (6528, 39326), (6784, 37842), (7208, 35616), (7616, 33708), (8427, 30464), (8904, 28832), (10176, 25228), (10812, 23744), (11236, 22848), (11424, 22472), (11872, 21624), (12614, 20352), (13056, 19663), (13568, 18921), (14416, 17808), (15232, 16854)]