20781404280

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:449

約数の個数: 1024

約数和(自身を含む): 92897280000

約数和(自身を除く): 72115875720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 19, 20, 21, 24, 26, 27, 28, 30, 31, 35, 36, 38, 39, 40, 42, 45, 52, 54, 56, 57, 60, 62, 63, 65, 70, 72, 76, 78, 84, 90, 91, 93, 95, 104, 105, 108, 114, 117, 120, 124, 126, 130, 133, 135, 140, 152, 155, 156, 168, 171, 180, 182, 186, 189, 190, 195, 210, 216, 217, 228, 234, 247, 248, 252, 260, 266, 270, 273, 279, 280, 285, 310, 312, 315, 342, 351, 359, 360, 364, 372, 378, 380, 390, 399, 403, 420, 434, 455, 456, 465, 468, 494, 504, 513, 520, 532, 540, 546, 558, 570, 585, 589, 620, 630, 651, 665, 684, 702, 718, 728, 741, 744, 756, 760, 780, 798, 806, 819, 837, 840, 855, 868, 910, 930, 936, 945, 988, 1026, 1064, 1077, 1080, 1085, 1092, 1116, 1140, 1170, 1178, 1197, 1209, 1235, 1240, 1260, 1302, 1330, 1365, 1368, 1395, 1404, 1436, 1482, 1512, 1560, 1596, 1612, 1638, 1674, 1710, 1729, 1736, 1755, 1767, 1795, 1820, 1860, 1890, 1953, 1976, 1995, 2015, 2052, 2154, 2170, 2184, 2223, 2232, 2280, 2340, 2356, 2394, 2418, 2457, 2470, 2513, 2520, 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22258, 22568, 22617, 22971, 23335, 23436, 23560, 23940, 24180, 24570, 24738, 25130, 25389, 25848, 25935, 26040, 26505, 26676, 27284, 28002, 28210, 28728, 29016, 29295, 29640, 30156, 30628, 31122, 31806, 32310, 32669, 32760, 32984, 33345, 33387, 33480, 33852, 34105, 34580, 35340, 35910, 36270, 37107, 37336, 37695, 38285, 38772, 39060, 40926, 41230, 41496, 42003, 42315, 42408, 43080, 43524, 44460, 44516, 45234, 45942, 46670, 46683, 46872, 47747, 47880, 48360, 48465, 49140, 49476, 50260, 50778, 51870, 53010, 53352, 53599, 54405, 54568, 55645, 56004, 56420, 58590, 60312, 61256, 61389, 61845, 62244, 63612, 64620, 65338, 66690, 66774, 67704, 67851, 68210, 68913, 69160, 70005, 70680, 71820, 72540, 74214, 75390, 76167, 76570, 77544, 77805, 77903, 78120, 79515, 81852, 82460, 84006, 84630, 87048, 88673, 88920, 89032, 90468, 91884, 93340, 93366, 95494, 96930, 98007, 98280, 98952, 100161, 100520, 101556, 102315, 103740, 106020, 107198, 108810, 111290, 111321, 112008, 112840, 113085, 114855, 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507780, 532038, 535990, 542808, 551304, 556605, 560040, 572964, 578708, 588042, 600966, 609336, 613890, 620711, 622440, 623224, 630045, 634353, 636120, 643188, 653380, 667740, 678510, 689130, 701127, 709384, 716205, 723385, 736668, 742140, 761670, 779030, 784056, 798057, 801288, 803985, 818520, 826956, 840060, 845804, 859446, 868062, 882063, 886730, 890568, 904680, 918840, 920835, 933660, 934836, 954940, 964782, 980070, 1001610, 1008072, 1012739, 1015560, 1033695, 1057255, 1064076, 1071980, 1113210, 1145928, 1157416, 1168545, 1176084, 1201932, 1227780, 1241422, 1260090, 1268706, 1286376, 1289169, 1302093, 1306760, 1330095, 1335480, 1357020, 1378260, 1402254, 1432410, 1446770, 1447173, 1470105, 1473336, 1480157, 1484280, 1502415, 1523340, 1558060, 1596114, 1607970, 1653912, 1680120, 1691608, 1718892, 1736124, 1764126, 1773460, 1841670, 1862133, 1867320, 1869672, 1903059, 1909880, 1929564, 1960140, 2003220, 2025478, 2067390, 2103381, 2114510, 2128152, 2143960, 2148615, 2170155, 2226420, 2337090, 2352168, 2394171, 2403864, 2411955, 2455560, 2482844, 2520180, 2537412, 2578338, 2604186, 2660190, 2714040, 2748863, 2756520, 2804508, 2864820, 2893540, 2894346, 2940210, 2960314, 3004830, 3038217, 3046680, 3103555, 3116120, 3171765, 3192228, 3215940, 3437784, 3472248, 3505635, 3528252, 3546920, 3683340, 3724266, 3806118, 3859128, 3906279, 3920280, 3990285, 4006440, 4050956, 4134780, 4206762, 4229020, 4297230, 4340310, 4410315, 4440471, 4452840, 4674180, 4788342, 4823910, 4965688, 5040360, 5063695, 5074824, 5156676, 5208372, 5320380, 5497726, 5586399, 5609016, 5709177, 5729640, 5787080, 5788692, 5880420, 5920628, 6009660, 6076434, 6207110, 6343530, 6384456, 6431880, 6445845, 6510465, 7011270, 7056504, 7235865, 7366680, 7400785, 7448532, 7612236, 7812558, 7980570, 8101912, 8246589, 8269560, 8413524, 8458040, 8594460, 8680620, 8820630, 8880942, 9114651, 9310665, 9348360, 9515295, 9576684, 9647820, 10127390, 10313352, 10416744, 10516905, 10640760, 10995452, 11172798, 11418354, 11577384, 11760840, 11841256, 11970855, 12019320, 12152868, 12414220, 12687060, 12891690, 13020930, 13321413, 13744315, 14022540, 14471730, 14801570, 14897064, 15191085, 15224472, 15625116, 15961140, 16493178, 16759197, 16827048, 17188920, 17361240, 17641260, 17761884, 18229302, 18621330, 19030590, 19153368, 19242041, 19295640, 19531395, 20254780, 21033810, 21990904, 22202355, 22345596, 22836708, 23941710, 24305736, 24739767, 24828440, 25374120, 25783380, 26041860, 26642826, 27343953, 27488630, 27931995, 28045080, 28545885, 28943460, 29603140, 30382170, 31250232, 31922280, 32986356, 33518394, 35282520, 35523768, 36458604, 37242660, 38061180, 38484082, 39062790, 39964239, 40509560, 41232945, 42067620, 44404710, 44691192, 45573255, 45673416, 47883420, 49479534, 51566760, 52083720, 53285652, 54687906, 54977260, 55863990, 57091770, 57726123, 57886920, 59206280, 60764340, 65972712, 66607065, 67036788, 72917208, 74219301, 74485320, 76122360, 76968164, 78125580, 79928478, 82465890, 83795985, 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約数ペア:

[(1, 20781404280), (2, 10390702140), (3, 6927134760), (4, 5195351070), (5, 4156280856), (6, 3463567380), (7, 2968772040), (8, 2597675535), (9, 2309044920), (10, 2078140428), (12, 1731783690), (13, 1598569560), (14, 1484386020), (15, 1385426952), (18, 1154522460), (19, 1093758120), (20, 1039070214), (21, 989590680), (24, 865891845), (26, 799284780), (27, 769681640), (28, 742193010), (30, 692713476), (31, 670367880), (35, 593754408), (36, 577261230), (38, 546879060), (39, 532856520), (40, 519535107), (42, 494795340), (45, 461808984), (52, 399642390), (54, 384840820), (56, 371096505), (57, 364586040), (60, 346356738), (62, 335183940), (63, 329863560), (65, 319713912), (70, 296877204), (72, 288630615), (76, 273439530), (78, 266428260), (84, 247397670), (90, 230904492), (91, 228367080), (93, 223455960), (95, 218751624), (104, 199821195), (105, 197918136), (108, 192420410), (114, 182293020), (117, 177618840), (120, 173178369), (124, 167591970), (126, 164931780), (130, 159856956), (133, 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(77903, 266760), (78120, 266019), (79515, 261352), (81852, 253890), (82460, 252018), (84006, 247380), (84630, 245556), (87048, 238735), (88673, 234360), (88920, 233709), (89032, 233415), (90468, 229710), (91884, 226170), (93340, 222642), (93366, 222580), (95494, 217620), (96930, 214396), (98007, 212040), (98280, 211451), (98952, 210015), (100161, 207480), (100520, 206739), (101556, 204630), (102315, 203112), (103740, 200322), (106020, 196014), (107198, 193860), (108810, 190988), (111290, 186732), (111321, 186680), (112008, 185535), (112840, 184167), (113085, 183768), (114855, 180936), (117180, 177346), (122778, 169260), (123690, 168012), (124488, 166935), (126009, 164920), (126945, 163704), (127224, 163345), (129240, 160797), (130676, 159030), (133380, 155806), (133548, 155610), (135702, 153140), (136420, 152334), (137826, 150780), (140010, 148428), (143241, 145080), (143640, 144677)]