261217320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1259}}^1$

素因数の和:1312

約数の個数: 256

約数和(自身を含む): 1016064000

約数和(自身を除く): 754846680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 19, 20, 21, 24, 26, 28, 30, 35, 38, 39, 40, 42, 52, 56, 57, 60, 65, 70, 76, 78, 84, 91, 95, 104, 105, 114, 120, 130, 133, 140, 152, 156, 168, 182, 190, 195, 210, 228, 247, 260, 266, 273, 280, 285, 312, 364, 380, 390, 399, 420, 455, 456, 494, 520, 532, 546, 570, 665, 728, 741, 760, 780, 798, 840, 910, 988, 1064, 1092, 1140, 1235, 1259, 1330, 1365, 1482, 1560, 1596, 1729, 1820, 1976, 1995, 2184, 2280, 2470, 2518, 2660, 2730, 2964, 3192, 3458, 3640, 3705, 3777, 3990, 4940, 5036, 5187, 5320, 5460, 5928, 6295, 6916, 7410, 7554, 7980, 8645, 8813, 9880, 10072, 10374, 10920, 12590, 13832, 14820, 15108, 15960, 16367, 17290, 17626, 18885, 20748, 23921, 25180, 25935, 26439, 29640, 30216, 32734, 34580, 35252, 37770, 41496, 44065, 47842, 49101, 50360, 51870, 52878, 65468, 69160, 70504, 71763, 75540, 81835, 88130, 95684, 98202, 103740, 105756, 114569, 119605, 130936, 132195, 143526, 151080, 163670, 167447, 176260, 191368, 196404, 207480, 211512, 229138, 239210, 245505, 264390, 287052, 310973, 327340, 334894, 343707, 352520, 358815, 392808, 458276, 478420, 491010, 502341, 528780, 572845, 574104, 621946, 654680, 669788, 687414, 717630, 837235, 916552, 932919, 956840, 982020, 1004682, 1057560, 1145690, 1243892, 1339576, 1374828, 1435260, 1554865, 1674470, 1718535, 1865838, 1964040, 2009364, 2176811, 2291380, 2487784, 2511705, 2749656, 2870520, 3109730, 3348940, 3437070, 3731676, 4018728, 4353622, 4582760, 4664595, 5023410, 6219460, 6530433, 6697880, 6874140, 7463352, 8707244, 9329190, 10046820, 10884055, 12438920, 13060866, 13748280, 17414488, 18658380, 20093640, 21768110, 26121732, 32652165, 37316760, 43536220, 52243464, 65304330, 87072440, 130608660, 261217320]

約数ペア:

[(1, 261217320), (2, 130608660), (3, 87072440), (4, 65304330), (5, 52243464), (6, 43536220), (7, 37316760), (8, 32652165), (10, 26121732), (12, 21768110), (13, 20093640), (14, 18658380), (15, 17414488), (19, 13748280), (20, 13060866), (21, 12438920), (24, 10884055), (26, 10046820), (28, 9329190), (30, 8707244), (35, 7463352), (38, 6874140), (39, 6697880), (40, 6530433), (42, 6219460), (52, 5023410), (56, 4664595), (57, 4582760), (60, 4353622), (65, 4018728), (70, 3731676), (76, 3437070), (78, 3348940), (84, 3109730), (91, 2870520), (95, 2749656), (104, 2511705), (105, 2487784), (114, 2291380), (120, 2176811), (130, 2009364), (133, 1964040), (140, 1865838), (152, 1718535), (156, 1674470), (168, 1554865), (182, 1435260), (190, 1374828), (195, 1339576), (210, 1243892), (228, 1145690), (247, 1057560), (260, 1004682), (266, 982020), (273, 956840), (280, 932919), (285, 916552), (312, 837235), (364, 717630), (380, 687414), (390, 669788), (399, 654680), (420, 621946), (455, 574104), (456, 572845), (494, 528780), (520, 502341), (532, 491010), (546, 478420), (570, 458276), (665, 392808), (728, 358815), (741, 352520), (760, 343707), (780, 334894), (798, 327340), (840, 310973), (910, 287052), (988, 264390), (1064, 245505), (1092, 239210), (1140, 229138), (1235, 211512), (1259, 207480), (1330, 196404), (1365, 191368), (1482, 176260), (1560, 167447), (1596, 163670), (1729, 151080), (1820, 143526), (1976, 132195), (1995, 130936), (2184, 119605), (2280, 114569), (2470, 105756), (2518, 103740), (2660, 98202), (2730, 95684), (2964, 88130), (3192, 81835), (3458, 75540), (3640, 71763), (3705, 70504), (3777, 69160), (3990, 65468), (4940, 52878), (5036, 51870), (5187, 50360), (5320, 49101), (5460, 47842), (5928, 44065), (6295, 41496), (6916, 37770), (7410, 35252), (7554, 34580), (7980, 32734), (8645, 30216), (8813, 29640), (9880, 26439), (10072, 25935), (10374, 25180), (10920, 23921), (12590, 20748), (13832, 18885), (14820, 17626), (15108, 17290), (15960, 16367)]