261688320

素因数分解:

$2^{10}\times 3^4\times 5^1\times {\mathrm{631}}^1$

素因数の和:668

約数の個数: 220

約数和(自身を含む): 939229104

約数和(自身を除く): 677540784

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 216, 240, 256, 270, 288, 320, 324, 360, 384, 405, 432, 480, 512, 540, 576, 631, 640, 648, 720, 768, 810, 864, 960, 1024, 1080, 1152, 1262, 1280, 1296, 1440, 1536, 1620, 1728, 1893, 1920, 2160, 2304, 2524, 2560, 2592, 2880, 3072, 3155, 3240, 3456, 3786, 3840, 4320, 4608, 5048, 5120, 5184, 5679, 5760, 6310, 6480, 6912, 7572, 7680, 8640, 9216, 9465, 10096, 10368, 11358, 11520, 12620, 12960, 13824, 15144, 15360, 17037, 17280, 18930, 20192, 20736, 22716, 23040, 25240, 25920, 27648, 28395, 30288, 34074, 34560, 37860, 40384, 41472, 45432, 46080, 50480, 51111, 51840, 56790, 60576, 68148, 69120, 75720, 80768, 82944, 85185, 90864, 100960, 102222, 103680, 113580, 121152, 136296, 138240, 151440, 161536, 170370, 181728, 201920, 204444, 207360, 227160, 242304, 255555, 272592, 302880, 323072, 340740, 363456, 403840, 408888, 414720, 454320, 484608, 511110, 545184, 605760, 646144, 681480, 726912, 807680, 817776, 908640, 969216, 1022220, 1090368, 1211520, 1362960, 1453824, 1615360, 1635552, 1817280, 1938432, 2044440, 2180736, 2423040, 2725920, 2907648, 3230720, 3271104, 3634560, 4088880, 4361472, 4846080, 5451840, 5815296, 6542208, 7269120, 8177760, 8722944, 9692160, 10903680, 13084416, 14538240, 16355520, 17445888, 21807360, 26168832, 29076480, 32711040, 43614720, 52337664, 65422080, 87229440, 130844160, 261688320]

約数ペア:

[(1, 261688320), (2, 130844160), (3, 87229440), (4, 65422080), (5, 52337664), (6, 43614720), (8, 32711040), (9, 29076480), (10, 26168832), (12, 21807360), (15, 17445888), (16, 16355520), (18, 14538240), (20, 13084416), (24, 10903680), (27, 9692160), (30, 8722944), (32, 8177760), (36, 7269120), (40, 6542208), (45, 5815296), (48, 5451840), (54, 4846080), (60, 4361472), (64, 4088880), (72, 3634560), (80, 3271104), (81, 3230720), (90, 2907648), (96, 2725920), (108, 2423040), (120, 2180736), (128, 2044440), (135, 1938432), (144, 1817280), (160, 1635552), (162, 1615360), (180, 1453824), (192, 1362960), (216, 1211520), (240, 1090368), (256, 1022220), (270, 969216), (288, 908640), (320, 817776), (324, 807680), (360, 726912), (384, 681480), (405, 646144), (432, 605760), (480, 545184), (512, 511110), (540, 484608), (576, 454320), (631, 414720), (640, 408888), (648, 403840), (720, 363456), (768, 340740), (810, 323072), (864, 302880), (960, 272592), (1024, 255555), (1080, 242304), (1152, 227160), (1262, 207360), (1280, 204444), (1296, 201920), (1440, 181728), (1536, 170370), (1620, 161536), (1728, 151440), (1893, 138240), (1920, 136296), (2160, 121152), (2304, 113580), (2524, 103680), (2560, 102222), (2592, 100960), (2880, 90864), (3072, 85185), (3155, 82944), (3240, 80768), (3456, 75720), (3786, 69120), (3840, 68148), (4320, 60576), (4608, 56790), (5048, 51840), (5120, 51111), (5184, 50480), (5679, 46080), (5760, 45432), (6310, 41472), (6480, 40384), (6912, 37860), (7572, 34560), (7680, 34074), (8640, 30288), (9216, 28395), (9465, 27648), (10096, 25920), (10368, 25240), (11358, 23040), (11520, 22716), (12620, 20736), (12960, 20192), (13824, 18930), (15144, 17280), (15360, 17037)]