261322880

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:687

約数の個数: 192

約数和(自身を含む): 783843480

約数和(自身を除く): 522520600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 98, 104, 112, 128, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 320, 364, 392, 416, 448, 455, 490, 520, 560, 637, 640, 641, 728, 784, 832, 896, 910, 980, 1040, 1120, 1274, 1282, 1456, 1568, 1664, 1820, 1960, 2080, 2240, 2548, 2564, 2912, 3136, 3185, 3205, 3640, 3920, 4160, 4480, 4487, 5096, 5128, 5824, 6272, 6370, 6410, 7280, 7840, 8320, 8333, 8974, 10192, 10256, 11648, 12740, 12820, 14560, 15680, 16666, 17948, 20384, 20512, 22435, 25480, 25640, 29120, 31360, 31409, 33332, 35896, 40768, 41024, 41665, 44870, 50960, 51280, 58240, 58331, 62818, 66664, 71792, 81536, 82048, 83330, 89740, 101920, 102560, 116662, 125636, 133328, 143584, 157045, 166660, 179480, 203840, 205120, 233324, 251272, 266656, 287168, 291655, 314090, 333320, 358960, 407680, 408317, 410240, 466648, 502544, 533312, 574336, 583310, 628180, 666640, 717920, 816634, 933296, 1005088, 1066624, 1166620, 1256360, 1333280, 1435840, 1633268, 1866592, 2010176, 2041585, 2333240, 2512720, 2666560, 2871680, 3266536, 3733184, 4020352, 4083170, 4666480, 5025440, 5333120, 6533072, 7466368, 8166340, 9332960, 10050880, 13066144, 16332680, 18665920, 20101760, 26132288, 32665360, 37331840, 52264576, 65330720, 130661440, 261322880]

約数ペア:

[(1, 261322880), (2, 130661440), (4, 65330720), (5, 52264576), (7, 37331840), (8, 32665360), (10, 26132288), (13, 20101760), (14, 18665920), (16, 16332680), (20, 13066144), (26, 10050880), (28, 9332960), (32, 8166340), (35, 7466368), (40, 6533072), (49, 5333120), (52, 5025440), (56, 4666480), (64, 4083170), (65, 4020352), (70, 3733184), (80, 3266536), (91, 2871680), (98, 2666560), (104, 2512720), (112, 2333240), (128, 2041585), (130, 2010176), (140, 1866592), (160, 1633268), (182, 1435840), (196, 1333280), (208, 1256360), (224, 1166620), (245, 1066624), (260, 1005088), (280, 933296), (320, 816634), (364, 717920), (392, 666640), (416, 628180), (448, 583310), (455, 574336), (490, 533312), (520, 502544), (560, 466648), (637, 410240), (640, 408317), (641, 407680), (728, 358960), (784, 333320), (832, 314090), (896, 291655), (910, 287168), (980, 266656), (1040, 251272), (1120, 233324), (1274, 205120), (1282, 203840), (1456, 179480), (1568, 166660), (1664, 157045), (1820, 143584), (1960, 133328), (2080, 125636), (2240, 116662), (2548, 102560), (2564, 101920), (2912, 89740), (3136, 83330), (3185, 82048), (3205, 81536), (3640, 71792), (3920, 66664), (4160, 62818), (4480, 58331), (4487, 58240), (5096, 51280), (5128, 50960), (5824, 44870), (6272, 41665), (6370, 41024), (6410, 40768), (7280, 35896), (7840, 33332), (8320, 31409), (8333, 31360), (8974, 29120), (10192, 25640), (10256, 25480), (11648, 22435), (12740, 20512), (12820, 20384), (14560, 17948), (15680, 16666)]