191778935040

素因数分解:

$2^8\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3793}}^1$

素因数の和:3860

約数の個数: 1152

約数和(自身を含む): 893368627200

約数和(自身を除く): 701589692160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 19, 20, 21, 22, 24, 27, 28, 30, 32, 33, 35, 36, 38, 40, 42, 44, 45, 48, 54, 55, 56, 57, 60, 63, 64, 66, 70, 72, 76, 77, 80, 84, 88, 90, 95, 96, 99, 105, 108, 110, 112, 114, 120, 126, 128, 132, 133, 135, 140, 144, 152, 154, 160, 165, 168, 171, 176, 180, 189, 190, 192, 198, 209, 210, 216, 220, 224, 228, 231, 240, 252, 256, 264, 266, 270, 280, 285, 288, 297, 304, 308, 315, 320, 330, 336, 342, 352, 360, 378, 380, 384, 385, 396, 399, 418, 420, 432, 440, 448, 456, 462, 480, 495, 504, 513, 528, 532, 540, 560, 570, 576, 594, 608, 616, 627, 630, 640, 660, 665, 672, 684, 693, 704, 720, 756, 760, 768, 770, 792, 798, 836, 840, 855, 864, 880, 896, 912, 924, 945, 960, 990, 1008, 1026, 1045, 1056, 1064, 1080, 1120, 1140, 1152, 1155, 1188, 1197, 1216, 1232, 1254, 1260, 1280, 1320, 1330, 1344, 1368, 1386, 1408, 1440, 1463, 1485, 1512, 1520, 1540, 1584, 1596, 1672, 1680, 1710, 1728, 1760, 1792, 1824, 1848, 1881, 1890, 1920, 1980, 1995, 2016, 2052, 2079, 2090, 2112, 2128, 2160, 2240, 2280, 2304, 2310, 2376, 2394, 2432, 2464, 2508, 2520, 2565, 2640, 2660, 2688, 2736, 2772, 2816, 2880, 2926, 2970, 3024, 3040, 3080, 3135, 3168, 3192, 3344, 3360, 3420, 3456, 3465, 3520, 3591, 3648, 3696, 3762, 3780, 3793, 3840, 3960, 3990, 4032, 4104, 4158, 4180, 4224, 4256, 4320, 4389, 4480, 4560, 4620, 4752, 4788, 4864, 4928, 5016, 5040, 5130, 5280, 5320, 5376, 5472, 5544, 5643, 5760, 5852, 5940, 5985, 6048, 6080, 6160, 6270, 6336, 6384, 6688, 6720, 6840, 6912, 6930, 7040, 7182, 7296, 7315, 7392, 7524, 7560, 7586, 7920, 7980, 8064, 8208, 8316, 8360, 8448, 8512, 8640, 8778, 8960, 9120, 9240, 9405, 9504, 9576, 9856, 10032, 10080, 10260, 10395, 10560, 10640, 10944, 11088, 11286, 11379, 11520, 11704, 11880, 11970, 12096, 12160, 12320, 12540, 12672, 12768, 13167, 13376, 13440, 13680, 13860, 14080, 14364, 14592, 14630, 14784, 15048, 15120, 15172, 15840, 15960, 16128, 16416, 16632, 16720, 17024, 17280, 17556, 17955, 18240, 18480, 18810, 18965, 19008, 19152, 19712, 20064, 20160, 20520, 20790, 21120, 21280, 21888, 21945, 22176, 22572, 22758, 23408, 23760, 23940, 24192, 24320, 24640, 25080, 25344, 25536, 26334, 26551, 26752, 26880, 27360, 27720, 28215, 28728, 29260, 29568, 30096, 30240, 30344, 31680, 31920, 32832, 33264, 33440, 34048, 34137, 34560, 35112, 35910, 36480, 36960, 37620, 37930, 38016, 38304, 39501, 40128, 40320, 41040, 41580, 41723, 42240, 42560, 43776, 43890, 44352, 45144, 45516, 46816, 47520, 47880, 48384, 49280, 50160, 51072, 52668, 53102, 53504, 54720, 55440, 56430, 56895, 57456, 58520, 59136, 60192, 60480, 60688, 63360, 63840, 65664, 65835, 66528, 66880, 68274, 70224, 71820, 72067, 72960, 73920, 75240, 75860, 76032, 76608, 79002, 79653, 80256, 80640, 82080, 83160, 83446, 85120, 87780, 88704, 90288, 91032, 93632, 95040, 95760, 98560, 100320, 102144, 102411, 105336, 106204, 109440, 110880, 112860, 113790, 114912, 117040, 120384, 120960, 121376, 125169, 126720, 127680, 131328, 131670, 132755, 133056, 133760, 136548, 140448, 143640, 144134, 147840, 150480, 151720, 153216, 158004, 159306, 160512, 164160, 166320, 166892, 170240, 170685, 175560, 177408, 180576, 182064, 187264, 190080, 191520, 197505, 200640, 204822, 208615, 210672, 212408, 216201, 218880, 221760, 225720, 227580, 229824, 234080, 238959, 240768, 241920, 242752, 250338, 255360, 263340, 265510, 266112, 267520, 273096, 280896, 287280, 288268, 292061, 295680, 300960, 303440, 306432, 316008, 318612, 328320, 332640, 333784, 341370, 351120, 360335, 361152, 364128, 374528, 375507, 380160, 383040, 395010, 398265, 401280, 409644, 417230, 421344, 424816, 432402, 443520, 451440, 455160, 459648, 468160, 477918, 481536, 485504, 500676, 504469, 510720, 512055, 526680, 531020, 532224, 546192, 561792, 574560, 576536, 584122, 601920, 606880, 625845, 632016, 637224, 648603, 656640, 665280, 667568, 682740, 702240, 716877, 720670, 722304, 728256, 751014, 766080, 790020, 792737, 796530, 802560, 819288, 834460, 842688, 849632, 864804, 876183, 887040, 902880, 910320, 919296, 936320, 955836, 971008, 1001352, 1008938, 1024110, 1053360, 1062040, 1081005, 1092384, 1123584, 1126521, 1149120, 1153072, 1168244, 1194795, 1203840, 1213760, 1251690, 1264032, 1274448, 1297206, 1330560, 1335136, 1365480, 1404480, 1433754, 1441340, 1444608, 1456512, 1460305, 1502028, 1513407, 1532160, 1580040, 1585474, 1593060, 1638576, 1668920, 1685376, 1699264, 1729608, 1752366, 1805760, 1820640, 1872640, 1877535, 1911672, 1945809, 2002704, 2017876, 2048220, 2106720, 2124080, 2162010, 2184768, 2253042, 2298240, 2306144, 2336488, 2378211, 2389590, 2407680, 2427520, 2503380, 2522345, 2528064, 2548896, 2594412, 2628549, 2661120, 2670272, 2730960, 2808960, 2867508, 2882680, 2913024, 2920610, 3004056, 3026814, 3160080, 3170948, 3186120, 3243015, 3277152, 3337840, 3370752, 3398528, 3459216, 3504732, 3584385, 3611520, 3641280, 3755070, 3823344, 3891618, 3963685, 4005408, 4035752, 4096440, 4213440, 4248160, 4324020, 4369536, 4380915, 4506084, 4540221, 4596480, 4612288, 4672976, 4756422, 4779180, 4855040, 5006760, 5044690, 5056128, 5097792, 5188824, 5257098, 5340544, 5461920, 5549159, 5617920, 5632605, 5735016, 5765360, 5841220, 6008112, 6053628, 6320160, 6341896, 6372240, 6486030, 6554304, 6675680, 6797056, 6918432, 7009464, 7134633, 7168770, 7223040, 7282560, 7510140, 7567035, 7646688, 7783236, 7885647, 7927370, 8010816, 8071504, 8192880, 8426880, 8496320, 8648040, 8739072, 8761830, 9012168, 9080442, 9224576, 9345952, 9512844, 9558360, 9729045, 10013520, 10089380, 10112256, 10195584, 10377648, 10514196, 10681088, 10923840, 11098318, 11265210, 11470032, 11530720, 11682440, 11891055, 12016224, 12107256, 12640320, 12683792, 12744480, 12972060, 13108608, 13142745, 13351360, 13620663, 13836864, 14018928, 14269266, 14337540, 14565120, 15020280, 15134070, 15293376, 15566472, 15771294, 15854740, 16021632, 16143008, 16385760, 16647477, 16853760, 16992640, 17296080, 17523660, 18024336, 18160884, 18449152, 18691904, 19025688, 19116720, 19458090, 20027040, 20178760, 20391168, 20755296, 21028392, 21403899, 21847680, 22196636, 22530420, 22701105, 22940064, 23061440, 23364880, 23782110, 24032448, 24214512, 25280640, 25367584, 25488960, 25944120, 26217216, 26285490, 26702720, 27241326, 27673728, 27745795, 28037856, 28538532, 28675080, 30040560, 30268140, 30586752, 31132944, 31542588, 31709480, 32043264, 32286016, 32771520, 33294954, 33985280, 34592160, 35047320, 35673165, 36048672, 36321768, 37383808, 38051376, 38233440, 38916180, 39428235, 40054080, 40357520, 41510592, 42056784, 42807798, 43695360, 44393272, 45060840, 45402210, 45880128, 46122880, 46729760, 47564220, 48064896, 48429024, 49942431, 50561280, 50735168, 50977920, 51888240, 52570980, 53405440, 54482652, 55347456, 55491590, 56075712, 57077064, 57350160, 60081120, 60536280, 61173504, 62265888, 63085176, 63418960, 64572032, 65543040, 66589908, 68103315, 69184320, 70094640, 71346330, 72097344, 72643536, 74767616, 76102752, 76466880, 77832360, 78856470, 80108160, 80715040, 83021184, 83237385, 84113568, 85615596, 88786544, 90121680, 90804420, 91760256, 92245760, 93459520, 95128440, 96129792, 96858048, 99884862, 101470336, 101955840, 103776480, 105141960, 107019495, 108965304, 110983180, 112151424, 114154128, 114700320, 120162240, 121072560, 124531776, 126170352, 126837920, 129144064, 131086080, 133179816, 136206630, 138368640, 140189280, 142692660, 144194688, 145287072, 149827293, 152205504, 152933760, 155664720, 157712940, 160216320, 161430080, 166042368, 166474770, 168227136, 171231192, 177573088, 180243360, 181608840, 183520512, 186919040, 190256880, 193716096, 199769724, 202940672, 207552960, 210283920, 214038990, 217930608, 221966360, 224302848, 228308256, 229400640, 240324480, 242145120, 249063552, 249712155, 252340704, 253675840, 266359632, 272413260, 276737280, 280378560, 285385320, 288389376, 290574144, 299654586, 304411008, 305867520, 311329440, 315425880, 322860160, 332949540, 336454272, 342462384, 355146176, 360486720, 363217680, 373838080, 380513760, 387432192, 399539448, 415105920, 420567840, 428077980, 435861216, 443932720, 456616512, 458801280, 480648960, 484290240, 498127104, 499424310, 504681408, 507351680, 532719264, 544826520, 560757120, 570770640, 581148288, 599309172, 608822016, 622658880, 630851760, 645720320, 665899080, 672908544, 684924768, 710292352, 720973440, 726435360, 749136465, 761027520, 799078896, 830211840, 841135680, 856155960, 871722432, 887865440, 913233024, 917602560, 968580480, 998848620, 1009362816, 1014703360, 1065438528, 1089653040, 1121514240, 1141541280, 1162296576, 1198618344, 1245317760, 1261703520, 1331798160, 1369849536, 1420584704, 1441946880, 1452870720, 1498272930, 1522055040, 1598157792, 1682271360, 1712311920, 1743444864, 1775730880, 1826466048, 1937160960, 1997697240, 2018725632, 2130877056, 2179306080, 2283082560, 2397236688, 2490635520, 2523407040, 2663596320, 2739699072, 2905741440, 2996545860, 3044110080, 3196315584, 3364542720, 3424623840, 3486889728, 3551461760, 3995394480, 4261754112, 4358612160, 4566165120, 4794473376, 5046814080, 5327192640, 5479398144, 5811482880, 5993091720, 6392631168, 6849247680, 7102923520, 7990788960, 8717224320, 9132330240, 9588946752, 10093628160, 10654385280, 11986183440, 12785262336, 13698495360, 15981577920, 17434448640, 19177893504, 21308770560, 23972366880, 27396990720, 31963155840, 38355787008, 47944733760, 63926311680, 95889467520, 191778935040]

約数ペア:

[(1, 191778935040), (2, 95889467520), (3, 63926311680), (4, 47944733760), (5, 38355787008), (6, 31963155840), (7, 27396990720), (8, 23972366880), (9, 21308770560), (10, 19177893504), (11, 17434448640), (12, 15981577920), (14, 13698495360), (15, 12785262336), (16, 11986183440), (18, 10654385280), (19, 10093628160), (20, 9588946752), (21, 9132330240), (22, 8717224320), (24, 7990788960), (27, 7102923520), (28, 6849247680), (30, 6392631168), (32, 5993091720), (33, 5811482880), (35, 5479398144), (36, 5327192640), (38, 5046814080), (40, 4794473376), (42, 4566165120), (44, 4358612160), (45, 4261754112), (48, 3995394480), (54, 3551461760), (55, 3486889728), (56, 3424623840), (57, 3364542720), (60, 3196315584), (63, 3044110080), (64, 2996545860), (66, 2905741440), (70, 2739699072), (72, 2663596320), (76, 2523407040), (77, 2490635520), (80, 2397236688), (84, 2283082560), (88, 2179306080), (90, 2130877056), (95, 2018725632), (96, 1997697240), (99, 1937160960), (105, 1826466048), (108, 1775730880), (110, 1743444864), (112, 1712311920), (114, 1682271360), (120, 1598157792), (126, 1522055040), (128, 1498272930), (132, 1452870720), (133, 1441946880), (135, 1420584704), (140, 1369849536), (144, 1331798160), (152, 1261703520), (154, 1245317760), (160, 1198618344), (165, 1162296576), (168, 1141541280), (171, 1121514240), (176, 1089653040), (180, 1065438528), (189, 1014703360), (190, 1009362816), (192, 998848620), (198, 968580480), (209, 917602560), (210, 913233024), (216, 887865440), (220, 871722432), (224, 856155960), (228, 841135680), (231, 830211840), (240, 799078896), (252, 761027520), (256, 749136465), (264, 726435360), (266, 720973440), (270, 710292352), (280, 684924768), (285, 672908544), (288, 665899080), (297, 645720320), (304, 630851760), (308, 622658880), (315, 608822016), (320, 599309172), (330, 581148288), (336, 570770640), (342, 560757120), (352, 544826520), (360, 532719264), (378, 507351680), (380, 504681408), (384, 499424310), (385, 498127104), (396, 484290240), (399, 480648960), (418, 458801280), (420, 456616512), (432, 443932720), (440, 435861216), (448, 428077980), (456, 420567840), (462, 415105920), (480, 399539448), (495, 387432192), (504, 380513760), (513, 373838080), (528, 363217680), (532, 360486720), (540, 355146176), (560, 342462384), (570, 336454272), (576, 332949540), (594, 322860160), (608, 315425880), (616, 311329440), (627, 305867520), (630, 304411008), (640, 299654586), (660, 290574144), (665, 288389376), (672, 285385320), (684, 280378560), (693, 276737280), (704, 272413260), (720, 266359632), (756, 253675840), (760, 252340704), (768, 249712155), (770, 249063552), (792, 242145120), (798, 240324480), (836, 229400640), (840, 228308256), (855, 224302848), (864, 221966360), (880, 217930608), (896, 214038990), (912, 210283920), (924, 207552960), (945, 202940672), (960, 199769724), (990, 193716096), (1008, 190256880), (1026, 186919040), (1045, 183520512), (1056, 181608840), (1064, 180243360), (1080, 177573088), (1120, 171231192), (1140, 168227136), (1152, 166474770), (1155, 166042368), (1188, 161430080), (1197, 160216320), (1216, 157712940), (1232, 155664720), (1254, 152933760), (1260, 152205504), (1280, 149827293), (1320, 145287072), (1330, 144194688), (1344, 142692660), (1368, 140189280), (1386, 138368640), (1408, 136206630), (1440, 133179816), (1463, 131086080), (1485, 129144064), (1512, 126837920), (1520, 126170352), (1540, 124531776), (1584, 121072560), (1596, 120162240), (1672, 114700320), (1680, 114154128), (1710, 112151424), (1728, 110983180), (1760, 108965304), (1792, 107019495), (1824, 105141960), (1848, 103776480), (1881, 101955840), (1890, 101470336), (1920, 99884862), (1980, 96858048), (1995, 96129792), (2016, 95128440), (2052, 93459520), (2079, 92245760), (2090, 91760256), (2112, 90804420), (2128, 90121680), (2160, 88786544), (2240, 85615596), (2280, 84113568), (2304, 83237385), (2310, 83021184), (2376, 80715040), (2394, 80108160), (2432, 78856470), (2464, 77832360), (2508, 76466880), (2520, 76102752), (2565, 74767616), (2640, 72643536), (2660, 72097344), (2688, 71346330), (2736, 70094640), (2772, 69184320), (2816, 68103315), (2880, 66589908), (2926, 65543040), (2970, 64572032), (3024, 63418960), (3040, 63085176), (3080, 62265888), (3135, 61173504), (3168, 60536280), (3192, 60081120), (3344, 57350160), (3360, 57077064), (3420, 56075712), (3456, 55491590), (3465, 55347456), (3520, 54482652), (3591, 53405440), (3648, 52570980), (3696, 51888240), (3762, 50977920), (3780, 50735168), (3793, 50561280), (3840, 49942431), (3960, 48429024), (3990, 48064896), (4032, 47564220), (4104, 46729760), (4158, 46122880), (4180, 45880128), (4224, 45402210), (4256, 45060840), (4320, 44393272), (4389, 43695360), (4480, 42807798), (4560, 42056784), (4620, 41510592), (4752, 40357520), (4788, 40054080), (4864, 39428235), (4928, 38916180), (5016, 38233440), (5040, 38051376), (5130, 37383808), (5280, 36321768), (5320, 36048672), (5376, 35673165), (5472, 35047320), (5544, 34592160), (5643, 33985280), (5760, 33294954), (5852, 32771520), (5940, 32286016), (5985, 32043264), (6048, 31709480), (6080, 31542588), (6160, 31132944), (6270, 30586752), (6336, 30268140), (6384, 30040560), (6688, 28675080), (6720, 28538532), (6840, 28037856), (6912, 27745795), (6930, 27673728), (7040, 27241326), (7182, 26702720), (7296, 26285490), (7315, 26217216), (7392, 25944120), (7524, 25488960), (7560, 25367584), (7586, 25280640), (7920, 24214512), (7980, 24032448), (8064, 23782110), (8208, 23364880), (8316, 23061440), (8360, 22940064), (8448, 22701105), (8512, 22530420), (8640, 22196636), (8778, 21847680), (8960, 21403899), (9120, 21028392), (9240, 20755296), (9405, 20391168), (9504, 20178760), (9576, 20027040), (9856, 19458090), (10032, 19116720), (10080, 19025688), (10260, 18691904), (10395, 18449152), (10560, 18160884), (10640, 18024336), (10944, 17523660), (11088, 17296080), (11286, 16992640), (11379, 16853760), (11520, 16647477), (11704, 16385760), (11880, 16143008), (11970, 16021632), (12096, 15854740), (12160, 15771294), (12320, 15566472), (12540, 15293376), (12672, 15134070), (12768, 15020280), (13167, 14565120), (13376, 14337540), (13440, 14269266), (13680, 14018928), (13860, 13836864), (14080, 13620663), (14364, 13351360), (14592, 13142745), (14630, 13108608), (14784, 12972060), (15048, 12744480), (15120, 12683792), (15172, 12640320), (15840, 12107256), (15960, 12016224), (16128, 11891055), (16416, 11682440), (16632, 11530720), (16720, 11470032), (17024, 11265210), (17280, 11098318), (17556, 10923840), (17955, 10681088), (18240, 10514196), (18480, 10377648), (18810, 10195584), (18965, 10112256), (19008, 10089380), (19152, 10013520), (19712, 9729045), (20064, 9558360), (20160, 9512844), (20520, 9345952), (20790, 9224576), (21120, 9080442), (21280, 9012168), (21888, 8761830), (21945, 8739072), (22176, 8648040), (22572, 8496320), (22758, 8426880), (23408, 8192880), (23760, 8071504), (23940, 8010816), (24192, 7927370), (24320, 7885647), (24640, 7783236), (25080, 7646688), (25344, 7567035), (25536, 7510140), (26334, 7282560), (26551, 7223040), (26752, 7168770), (26880, 7134633), (27360, 7009464), (27720, 6918432), (28215, 6797056), (28728, 6675680), (29260, 6554304), (29568, 6486030), (30096, 6372240), (30240, 6341896), (30344, 6320160), (31680, 6053628), (31920, 6008112), (32832, 5841220), (33264, 5765360), (33440, 5735016), (34048, 5632605), (34137, 5617920), (34560, 5549159), (35112, 5461920), (35910, 5340544), (36480, 5257098), (36960, 5188824), (37620, 5097792), (37930, 5056128), (38016, 5044690), (38304, 5006760), (39501, 4855040), (40128, 4779180), (40320, 4756422), (41040, 4672976), (41580, 4612288), (41723, 4596480), (42240, 4540221), (42560, 4506084), (43776, 4380915), (43890, 4369536), (44352, 4324020), (45144, 4248160), (45516, 4213440), (46816, 4096440), (47520, 4035752), (47880, 4005408), (48384, 3963685), (49280, 3891618), (50160, 3823344), (51072, 3755070), (52668, 3641280), (53102, 3611520), (53504, 3584385), (54720, 3504732), (55440, 3459216), (56430, 3398528), (56895, 3370752), (57456, 3337840), (58520, 3277152), (59136, 3243015), (60192, 3186120), (60480, 3170948), (60688, 3160080), (63360, 3026814), (63840, 3004056), (65664, 2920610), (65835, 2913024), (66528, 2882680), (66880, 2867508), (68274, 2808960), (70224, 2730960), (71820, 2670272), (72067, 2661120), (72960, 2628549), (73920, 2594412), (75240, 2548896), (75860, 2528064), (76032, 2522345), (76608, 2503380), (79002, 2427520), (79653, 2407680), (80256, 2389590), (80640, 2378211), (82080, 2336488), (83160, 2306144), (83446, 2298240), (85120, 2253042), (87780, 2184768), (88704, 2162010), (90288, 2124080), (91032, 2106720), (93632, 2048220), (95040, 2017876), (95760, 2002704), (98560, 1945809), (100320, 1911672), (102144, 1877535), (102411, 1872640), (105336, 1820640), (106204, 1805760), (109440, 1752366), (110880, 1729608), (112860, 1699264), (113790, 1685376), (114912, 1668920), (117040, 1638576), (120384, 1593060), (120960, 1585474), (121376, 1580040), (125169, 1532160), (126720, 1513407), (127680, 1502028), (131328, 1460305), (131670, 1456512), (132755, 1444608), (133056, 1441340), (133760, 1433754), (136548, 1404480), (140448, 1365480), (143640, 1335136), (144134, 1330560), (147840, 1297206), (150480, 1274448), (151720, 1264032), (153216, 1251690), (158004, 1213760), (159306, 1203840), (160512, 1194795), (164160, 1168244), (166320, 1153072), (166892, 1149120), (170240, 1126521), (170685, 1123584), (175560, 1092384), (177408, 1081005), (180576, 1062040), (182064, 1053360), (187264, 1024110), (190080, 1008938), (191520, 1001352), (197505, 971008), (200640, 955836), (204822, 936320), (208615, 919296), (210672, 910320), (212408, 902880), (216201, 887040), (218880, 876183), (221760, 864804), (225720, 849632), (227580, 842688), (229824, 834460), (234080, 819288), (238959, 802560), (240768, 796530), (241920, 792737), (242752, 790020), (250338, 766080), (255360, 751014), (263340, 728256), (265510, 722304), (266112, 720670), (267520, 716877), (273096, 702240), (280896, 682740), (287280, 667568), (288268, 665280), (292061, 656640), (295680, 648603), (300960, 637224), (303440, 632016), (306432, 625845), (316008, 606880), (318612, 601920), (328320, 584122), (332640, 576536), (333784, 574560), (341370, 561792), (351120, 546192), (360335, 532224), (361152, 531020), (364128, 526680), (374528, 512055), (375507, 510720), (380160, 504469), (383040, 500676), (395010, 485504), (398265, 481536), (401280, 477918), (409644, 468160), (417230, 459648), (421344, 455160), (424816, 451440), (432402, 443520)]