195062757120

素因数分解:

$2^8\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3187}}^1$

素因数の和:3258

約数の個数: 1152

約数和(自身を含む): 900809441280

約数和(自身を除く): 705746684160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 23, 24, 27, 28, 30, 32, 33, 35, 36, 40, 42, 44, 45, 46, 48, 54, 55, 56, 60, 63, 64, 66, 69, 70, 72, 77, 80, 84, 88, 90, 92, 96, 99, 105, 108, 110, 112, 115, 120, 126, 128, 132, 135, 138, 140, 144, 154, 160, 161, 165, 168, 176, 180, 184, 189, 192, 198, 207, 210, 216, 220, 224, 230, 231, 240, 252, 253, 256, 264, 270, 276, 280, 288, 297, 308, 315, 320, 322, 330, 336, 345, 352, 360, 368, 378, 384, 385, 396, 414, 420, 432, 440, 448, 460, 462, 480, 483, 495, 504, 506, 528, 540, 552, 560, 576, 594, 616, 621, 630, 640, 644, 660, 672, 690, 693, 704, 720, 736, 756, 759, 768, 770, 792, 805, 828, 840, 864, 880, 896, 920, 924, 945, 960, 966, 990, 1008, 1012, 1035, 1056, 1080, 1104, 1120, 1152, 1155, 1188, 1232, 1242, 1260, 1265, 1280, 1288, 1320, 1344, 1380, 1386, 1408, 1440, 1449, 1472, 1485, 1512, 1518, 1540, 1584, 1610, 1656, 1680, 1728, 1760, 1771, 1792, 1840, 1848, 1890, 1920, 1932, 1980, 2016, 2024, 2070, 2079, 2112, 2160, 2208, 2240, 2277, 2304, 2310, 2376, 2415, 2464, 2484, 2520, 2530, 2576, 2640, 2688, 2760, 2772, 2816, 2880, 2898, 2944, 2970, 3024, 3036, 3080, 3105, 3168, 3187, 3220, 3312, 3360, 3456, 3465, 3520, 3542, 3680, 3696, 3780, 3795, 3840, 3864, 3960, 4032, 4048, 4140, 4158, 4224, 4320, 4347, 4416, 4480, 4554, 4620, 4752, 4830, 4928, 4968, 5040, 5060, 5152, 5280, 5313, 5376, 5520, 5544, 5760, 5796, 5888, 5940, 6048, 6072, 6160, 6210, 6336, 6374, 6440, 6624, 6720, 6831, 6912, 6930, 7040, 7084, 7245, 7360, 7392, 7560, 7590, 7728, 7920, 8064, 8096, 8280, 8316, 8448, 8640, 8694, 8832, 8855, 8960, 9108, 9240, 9504, 9561, 9660, 9856, 9936, 10080, 10120, 10304, 10395, 10560, 10626, 11040, 11088, 11385, 11520, 11592, 11880, 12096, 12144, 12320, 12420, 12672, 12748, 12880, 13248, 13440, 13662, 13860, 14080, 14168, 14490, 14720, 14784, 15120, 15180, 15456, 15840, 15935, 15939, 16128, 16192, 16560, 16632, 17280, 17388, 17664, 17710, 18216, 18480, 19008, 19122, 19320, 19712, 19872, 20160, 20240, 20608, 20790, 21120, 21252, 21735, 22080, 22176, 22309, 22770, 23184, 23760, 24192, 24288, 24640, 24840, 25344, 25496, 25760, 26496, 26565, 26880, 27324, 27720, 28336, 28683, 28980, 29440, 29568, 30240, 30360, 30912, 31680, 31870, 31878, 32384, 33120, 33264, 34155, 34560, 34776, 35057, 35420, 36432, 36960, 38016, 38244, 38640, 39744, 40320, 40480, 41216, 41580, 42240, 42504, 43470, 44160, 44352, 44618, 45540, 46368, 47520, 47805, 47817, 48384, 48576, 49280, 49680, 50992, 51520, 52992, 53130, 54648, 55440, 56672, 57366, 57960, 59136, 60480, 60720, 61824, 63360, 63740, 63756, 64768, 66240, 66528, 66927, 68310, 69552, 70114, 70840, 72864, 73301, 73920, 76032, 76488, 77280, 79488, 79695, 80640, 80960, 83160, 85008, 86049, 86940, 88320, 88704, 89236, 91080, 92736, 95040, 95610, 95634, 97152, 98560, 99360, 101984, 103040, 105171, 106260, 109296, 110880, 111545, 113344, 114732, 115920, 120960, 121440, 123648, 126720, 127480, 127512, 132480, 133056, 133854, 136620, 139104, 140228, 141680, 143415, 145728, 146602, 147840, 152976, 154560, 158976, 159390, 161920, 166320, 170016, 172098, 173880, 175285, 177408, 178472, 182160, 185472, 190080, 191220, 191268, 194304, 198720, 200781, 203968, 206080, 210342, 212520, 218592, 219903, 221760, 223090, 226688, 229464, 231840, 239085, 241920, 242880, 245399, 254960, 255024, 264960, 266112, 267708, 273240, 278208, 280456, 283360, 286830, 291456, 293204, 295680, 305952, 309120, 315513, 318780, 323840, 332640, 334635, 340032, 344196, 347760, 350570, 356944, 364320, 366505, 370944, 380160, 382440, 382536, 397440, 401562, 407936, 420684, 425040, 430245, 437184, 439806, 443520, 446180, 453376, 458928, 463680, 478170, 485760, 490798, 509920, 510048, 513107, 525855, 532224, 535416, 546480, 556416, 560912, 566720, 573660, 582912, 586408, 602343, 611904, 618240, 631026, 637560, 659709, 665280, 669270, 680064, 688392, 695520, 701140, 713888, 728640, 733010, 736197, 764880, 765072, 794880, 803124, 806311, 815872, 841368, 850080, 860490, 874368, 879612, 887040, 892360, 917856, 927360, 946539, 956340, 971520, 981596, 1003905, 1019840, 1020096, 1026214, 1051710, 1070832, 1092960, 1099515, 1112832, 1121824, 1133440, 1147320, 1172816, 1204686, 1223808, 1226995, 1262052, 1275120, 1319418, 1330560, 1338540, 1360128, 1376784, 1391040, 1402280, 1427776, 1457280, 1466020, 1472394, 1529760, 1530144, 1539321, 1577565, 1606248, 1612622, 1682736, 1700160, 1720980, 1748736, 1759224, 1784720, 1835712, 1854720, 1893078, 1912680, 1963192, 1979127, 2007810, 2039680, 2040192, 2052428, 2103420, 2141664, 2185920, 2199030, 2208591, 2243648, 2266880, 2294640, 2345632, 2409372, 2418933, 2447616, 2453990, 2524104, 2550240, 2565535, 2638836, 2661120, 2677080, 2753568, 2782080, 2804560, 2855552, 2914560, 2932040, 2944788, 3011715, 3059520, 3060288, 3078642, 3155130, 3212496, 3225244, 3298545, 3365472, 3400320, 3441960, 3518448, 3569440, 3671424, 3680985, 3786156, 3825360, 3926384, 3958254, 4015620, 4031555, 4079360, 4080384, 4104856, 4206840, 4283328, 4371840, 4398060, 4417182, 4487296, 4589280, 4617963, 4691264, 4732695, 4818744, 4837866, 4907980, 5048208, 5100480, 5131070, 5277672, 5354160, 5507136, 5564160, 5609120, 5644177, 5711104, 5864080, 5889576, 6023430, 6119040, 6120576, 6157284, 6310260, 6424992, 6450488, 6597090, 6625773, 6730944, 6800640, 6883920, 7036896, 7138880, 7256799, 7342848, 7361970, 7572312, 7650720, 7696605, 7852768, 7916508, 8031240, 8063110, 8209712, 8413680, 8566656, 8743680, 8796120, 8834364, 8974592, 9178560, 9235926, 9382528, 9465390, 9637488, 9675732, 9815960, 9895635, 10096416, 10200960, 10262140, 10555344, 10708320, 11014272, 11042955, 11218240, 11288354, 11728160, 11779152, 12046860, 12094665, 12238080, 12241152, 12314568, 12620520, 12849984, 12900976, 13194180, 13251546, 13461888, 13767840, 13853889, 14073792, 14277760, 14513598, 14723940, 15144624, 15301440, 15393210, 15705536, 15833016, 16062480, 16126220, 16419424, 16827360, 16932531, 17133312, 17592240, 17668728, 18357120, 18471852, 18765056, 18930780, 19274976, 19351464, 19631920, 19791270, 20192832, 20401920, 20524280, 21110688, 21416640, 21770397, 22028544, 22085910, 22436480, 22576708, 23089815, 23456320, 23558304, 24093720, 24189330, 24629136, 25241040, 25699968, 25801952, 26388360, 26503092, 26923776, 27535680, 27707778, 28147584, 28220885, 28555520, 29027196, 29447880, 30289248, 30602880, 30786420, 31411072, 31666032, 32124960, 32252440, 32838848, 33128865, 33654720, 33865062, 35184480, 35337456, 36283995, 36714240, 36943704, 37861560, 38549952, 38702928, 39263840, 39582540, 40385664, 41048560, 42221376, 42833280, 43540794, 44171820, 44872960, 45153416, 46179630, 46912640, 47116608, 48187440, 48378660, 49258272, 50482080, 50797593, 51399936, 51603904, 52776720, 53006184, 55071360, 55415556, 56295168, 56441770, 58054392, 58895760, 60578496, 61205760, 61572840, 62822144, 63332064, 64249920, 64504880, 65677696, 66257730, 67309440, 67730124, 69269445, 70368960, 70674912, 72567990, 73887408, 75723120, 77099904, 77405856, 78527680, 79165080, 80771328, 82097120, 84442752, 84662655, 85666560, 87081588, 88343640, 90306832, 92359260, 93825280, 94233216, 96374880, 96757320, 98516544, 100964160, 101595186, 103207808, 105553440, 106012368, 108851985, 110142720, 110831112, 112883540, 116108784, 117791520, 121156992, 123145680, 126664128, 128499840, 129009760, 131355392, 132515460, 134618880, 135460248, 138538890, 140737920, 141349824, 145135980, 147774816, 151446240, 152392779, 154199808, 154811712, 157055360, 158330160, 164194240, 168885504, 169325310, 174163176, 176687280, 180613664, 184718520, 188466432, 192749760, 193514640, 197033088, 201928320, 203190372, 206415616, 211106880, 212024736, 217703970, 221662224, 225767080, 232217568, 235583040, 242313984, 246291360, 253328256, 253987965, 256999680, 258019520, 265030920, 270920496, 277077780, 281475840, 282699648, 290271960, 295549632, 302892480, 304785558, 309623424, 314110720, 316660320, 328388480, 338650620, 348326352, 353374560, 361227328, 369437040, 385499520, 387029280, 394066176, 403856640, 406380744, 422213760, 424049472, 435407940, 443324448, 451534160, 464435136, 471166080, 492582720, 506656512, 507975930, 516039040, 530061840, 541840992, 554155560, 565399296, 580543920, 591099264, 605784960, 609571116, 619246848, 633320640, 656776960, 677301240, 696652704, 706749120, 722454656, 738874080, 761963895, 770999040, 774058560, 812761488, 844427520, 848098944, 870815880, 886648896, 903068320, 928870272, 942332160, 985165440, 1015951860, 1032078080, 1060123680, 1083681984, 1108311120, 1161087840, 1182198528, 1211569920, 1219142232, 1266641280, 1354602480, 1393305408, 1413498240, 1444909312, 1477748160, 1523927790, 1548117120, 1625522976, 1696197888, 1741631760, 1773297792, 1806136640, 1857740544, 1970330880, 2031903720, 2120247360, 2167363968, 2216622240, 2322175680, 2438284464, 2533282560, 2709204960, 2786610816, 2826996480, 2955496320, 3047855580, 3096234240, 3251045952, 3483263520, 3546595584, 3612273280, 4063807440, 4240494720, 4334727936, 4433244480, 4644351360, 4876568928, 5418409920, 5573221632, 5910992640, 6095711160, 6502091904, 6966527040, 7224546560, 8127614880, 8480989440, 8866488960, 9288702720, 9753137856, 10836819840, 12191422320, 13004183808, 13933054080, 16255229760, 17732977920, 19506275712, 21673639680, 24382844640, 27866108160, 32510459520, 39012551424, 48765689280, 65020919040, 97531378560, 195062757120]

約数ペア:

[(1, 195062757120), (2, 97531378560), (3, 65020919040), (4, 48765689280), (5, 39012551424), (6, 32510459520), (7, 27866108160), (8, 24382844640), (9, 21673639680), (10, 19506275712), (11, 17732977920), (12, 16255229760), (14, 13933054080), (15, 13004183808), (16, 12191422320), (18, 10836819840), (20, 9753137856), (21, 9288702720), (22, 8866488960), (23, 8480989440), (24, 8127614880), (27, 7224546560), (28, 6966527040), (30, 6502091904), (32, 6095711160), (33, 5910992640), (35, 5573221632), (36, 5418409920), (40, 4876568928), (42, 4644351360), (44, 4433244480), (45, 4334727936), (46, 4240494720), (48, 4063807440), (54, 3612273280), (55, 3546595584), (56, 3483263520), (60, 3251045952), (63, 3096234240), (64, 3047855580), (66, 2955496320), (69, 2826996480), (70, 2786610816), (72, 2709204960), (77, 2533282560), (80, 2438284464), (84, 2322175680), (88, 2216622240), (90, 2167363968), (92, 2120247360), (96, 2031903720), (99, 1970330880), (105, 1857740544), (108, 1806136640), (110, 1773297792), (112, 1741631760), (115, 1696197888), (120, 1625522976), (126, 1548117120), (128, 1523927790), (132, 1477748160), (135, 1444909312), (138, 1413498240), (140, 1393305408), (144, 1354602480), (154, 1266641280), (160, 1219142232), (161, 1211569920), (165, 1182198528), (168, 1161087840), (176, 1108311120), (180, 1083681984), (184, 1060123680), (189, 1032078080), (192, 1015951860), (198, 985165440), (207, 942332160), (210, 928870272), (216, 903068320), (220, 886648896), (224, 870815880), (230, 848098944), (231, 844427520), (240, 812761488), (252, 774058560), (253, 770999040), (256, 761963895), (264, 738874080), (270, 722454656), (276, 706749120), (280, 696652704), (288, 677301240), (297, 656776960), (308, 633320640), (315, 619246848), (320, 609571116), (322, 605784960), (330, 591099264), (336, 580543920), (345, 565399296), (352, 554155560), (360, 541840992), (368, 530061840), (378, 516039040), (384, 507975930), (385, 506656512), (396, 492582720), (414, 471166080), (420, 464435136), (432, 451534160), (440, 443324448), (448, 435407940), (460, 424049472), (462, 422213760), (480, 406380744), (483, 403856640), (495, 394066176), (504, 387029280), (506, 385499520), (528, 369437040), (540, 361227328), (552, 353374560), (560, 348326352), (576, 338650620), (594, 328388480), (616, 316660320), (621, 314110720), (630, 309623424), (640, 304785558), (644, 302892480), (660, 295549632), (672, 290271960), (690, 282699648), (693, 281475840), (704, 277077780), (720, 270920496), (736, 265030920), (756, 258019520), (759, 256999680), (768, 253987965), (770, 253328256), (792, 246291360), (805, 242313984), (828, 235583040), (840, 232217568), (864, 225767080), (880, 221662224), (896, 217703970), (920, 212024736), (924, 211106880), (945, 206415616), (960, 203190372), (966, 201928320), (990, 197033088), (1008, 193514640), (1012, 192749760), (1035, 188466432), (1056, 184718520), (1080, 180613664), (1104, 176687280), (1120, 174163176), (1152, 169325310), (1155, 168885504), (1188, 164194240), (1232, 158330160), (1242, 157055360), (1260, 154811712), (1265, 154199808), (1280, 152392779), (1288, 151446240), (1320, 147774816), (1344, 145135980), (1380, 141349824), (1386, 140737920), (1408, 138538890), (1440, 135460248), (1449, 134618880), (1472, 132515460), (1485, 131355392), (1512, 129009760), (1518, 128499840), (1540, 126664128), (1584, 123145680), (1610, 121156992), (1656, 117791520), (1680, 116108784), (1728, 112883540), (1760, 110831112), (1771, 110142720), (1792, 108851985), (1840, 106012368), (1848, 105553440), (1890, 103207808), (1920, 101595186), (1932, 100964160), (1980, 98516544), (2016, 96757320), (2024, 96374880), (2070, 94233216), (2079, 93825280), (2112, 92359260), (2160, 90306832), (2208, 88343640), (2240, 87081588), (2277, 85666560), (2304, 84662655), (2310, 84442752), (2376, 82097120), (2415, 80771328), (2464, 79165080), (2484, 78527680), (2520, 77405856), (2530, 77099904), (2576, 75723120), (2640, 73887408), (2688, 72567990), (2760, 70674912), (2772, 70368960), (2816, 69269445), (2880, 67730124), (2898, 67309440), (2944, 66257730), (2970, 65677696), (3024, 64504880), (3036, 64249920), (3080, 63332064), (3105, 62822144), (3168, 61572840), (3187, 61205760), (3220, 60578496), (3312, 58895760), (3360, 58054392), (3456, 56441770), (3465, 56295168), (3520, 55415556), (3542, 55071360), (3680, 53006184), (3696, 52776720), (3780, 51603904), (3795, 51399936), (3840, 50797593), (3864, 50482080), (3960, 49258272), (4032, 48378660), (4048, 48187440), (4140, 47116608), (4158, 46912640), (4224, 46179630), (4320, 45153416), (4347, 44872960), (4416, 44171820), (4480, 43540794), (4554, 42833280), (4620, 42221376), (4752, 41048560), (4830, 40385664), (4928, 39582540), (4968, 39263840), (5040, 38702928), (5060, 38549952), (5152, 37861560), (5280, 36943704), (5313, 36714240), (5376, 36283995), (5520, 35337456), (5544, 35184480), (5760, 33865062), (5796, 33654720), (5888, 33128865), (5940, 32838848), (6048, 32252440), (6072, 32124960), (6160, 31666032), (6210, 31411072), (6336, 30786420), (6374, 30602880), (6440, 30289248), (6624, 29447880), (6720, 29027196), (6831, 28555520), (6912, 28220885), (6930, 28147584), (7040, 27707778), (7084, 27535680), (7245, 26923776), (7360, 26503092), (7392, 26388360), (7560, 25801952), (7590, 25699968), (7728, 25241040), (7920, 24629136), (8064, 24189330), (8096, 24093720), (8280, 23558304), (8316, 23456320), (8448, 23089815), (8640, 22576708), (8694, 22436480), (8832, 22085910), (8855, 22028544), (8960, 21770397), (9108, 21416640), (9240, 21110688), (9504, 20524280), (9561, 20401920), (9660, 20192832), (9856, 19791270), (9936, 19631920), (10080, 19351464), (10120, 19274976), (10304, 18930780), (10395, 18765056), (10560, 18471852), (10626, 18357120), (11040, 17668728), (11088, 17592240), (11385, 17133312), (11520, 16932531), (11592, 16827360), (11880, 16419424), (12096, 16126220), (12144, 16062480), (12320, 15833016), (12420, 15705536), (12672, 15393210), (12748, 15301440), (12880, 15144624), (13248, 14723940), (13440, 14513598), (13662, 14277760), (13860, 14073792), (14080, 13853889), (14168, 13767840), (14490, 13461888), (14720, 13251546), (14784, 13194180), (15120, 12900976), (15180, 12849984), (15456, 12620520), (15840, 12314568), (15935, 12241152), (15939, 12238080), (16128, 12094665), (16192, 12046860), (16560, 11779152), (16632, 11728160), (17280, 11288354), (17388, 11218240), (17664, 11042955), (17710, 11014272), (18216, 10708320), (18480, 10555344), (19008, 10262140), (19122, 10200960), (19320, 10096416), (19712, 9895635), (19872, 9815960), (20160, 9675732), (20240, 9637488), (20608, 9465390), (20790, 9382528), (21120, 9235926), (21252, 9178560), (21735, 8974592), (22080, 8834364), (22176, 8796120), (22309, 8743680), (22770, 8566656), (23184, 8413680), (23760, 8209712), (24192, 8063110), (24288, 8031240), (24640, 7916508), (24840, 7852768), (25344, 7696605), (25496, 7650720), (25760, 7572312), (26496, 7361970), (26565, 7342848), (26880, 7256799), (27324, 7138880), (27720, 7036896), (28336, 6883920), (28683, 6800640), (28980, 6730944), (29440, 6625773), (29568, 6597090), (30240, 6450488), (30360, 6424992), (30912, 6310260), (31680, 6157284), (31870, 6120576), (31878, 6119040), (32384, 6023430), (33120, 5889576), (33264, 5864080), (34155, 5711104), (34560, 5644177), (34776, 5609120), (35057, 5564160), (35420, 5507136), (36432, 5354160), (36960, 5277672), (38016, 5131070), (38244, 5100480), (38640, 5048208), (39744, 4907980), (40320, 4837866), (40480, 4818744), (41216, 4732695), (41580, 4691264), (42240, 4617963), (42504, 4589280), (43470, 4487296), (44160, 4417182), (44352, 4398060), (44618, 4371840), (45540, 4283328), (46368, 4206840), (47520, 4104856), (47805, 4080384), (47817, 4079360), (48384, 4031555), (48576, 4015620), (49280, 3958254), (49680, 3926384), (50992, 3825360), (51520, 3786156), (52992, 3680985), (53130, 3671424), (54648, 3569440), (55440, 3518448), (56672, 3441960), (57366, 3400320), (57960, 3365472), (59136, 3298545), (60480, 3225244), (60720, 3212496), (61824, 3155130), (63360, 3078642), (63740, 3060288), (63756, 3059520), (64768, 3011715), (66240, 2944788), (66528, 2932040), (66927, 2914560), (68310, 2855552), (69552, 2804560), (70114, 2782080), (70840, 2753568), (72864, 2677080), (73301, 2661120), (73920, 2638836), (76032, 2565535), (76488, 2550240), (77280, 2524104), (79488, 2453990), (79695, 2447616), (80640, 2418933), (80960, 2409372), (83160, 2345632), (85008, 2294640), (86049, 2266880), (86940, 2243648), (88320, 2208591), (88704, 2199030), (89236, 2185920), (91080, 2141664), (92736, 2103420), (95040, 2052428), (95610, 2040192), (95634, 2039680), (97152, 2007810), (98560, 1979127), (99360, 1963192), (101984, 1912680), (103040, 1893078), (105171, 1854720), (106260, 1835712), (109296, 1784720), (110880, 1759224), (111545, 1748736), (113344, 1720980), (114732, 1700160), (115920, 1682736), (120960, 1612622), (121440, 1606248), (123648, 1577565), (126720, 1539321), (127480, 1530144), (127512, 1529760), (132480, 1472394), (133056, 1466020), (133854, 1457280), (136620, 1427776), (139104, 1402280), (140228, 1391040), (141680, 1376784), (143415, 1360128), (145728, 1338540), (146602, 1330560), (147840, 1319418), (152976, 1275120), (154560, 1262052), (158976, 1226995), (159390, 1223808), (161920, 1204686), (166320, 1172816), (170016, 1147320), (172098, 1133440), (173880, 1121824), (175285, 1112832), (177408, 1099515), (178472, 1092960), (182160, 1070832), (185472, 1051710), (190080, 1026214), (191220, 1020096), (191268, 1019840), (194304, 1003905), (198720, 981596), (200781, 971520), (203968, 956340), (206080, 946539), (210342, 927360), (212520, 917856), (218592, 892360), (219903, 887040), (221760, 879612), (223090, 874368), (226688, 860490), (229464, 850080), (231840, 841368), (239085, 815872), (241920, 806311), (242880, 803124), (245399, 794880), (254960, 765072), (255024, 764880), (264960, 736197), (266112, 733010), (267708, 728640), (273240, 713888), (278208, 701140), (280456, 695520), (283360, 688392), (286830, 680064), (291456, 669270), (293204, 665280), (295680, 659709), (305952, 637560), (309120, 631026), (315513, 618240), (318780, 611904), (323840, 602343), (332640, 586408), (334635, 582912), (340032, 573660), (344196, 566720), (347760, 560912), (350570, 556416), (356944, 546480), (364320, 535416), (366505, 532224), (370944, 525855), (380160, 513107), (382440, 510048), (382536, 509920), (397440, 490798), (401562, 485760), (407936, 478170), (420684, 463680), (425040, 458928), (430245, 453376), (437184, 446180), (439806, 443520)]