1991909920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{12437}}^1$

素因数の和:12483

約数の個数: 192

約数和(自身を含む): 6318902016

約数和(自身を除く): 4326992096

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 32, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 160, 176, 182, 208, 220, 224, 260, 280, 286, 308, 352, 364, 385, 416, 440, 455, 520, 560, 572, 616, 715, 728, 770, 880, 910, 1001, 1040, 1120, 1144, 1232, 1430, 1456, 1540, 1760, 1820, 2002, 2080, 2288, 2464, 2860, 2912, 3080, 3640, 4004, 4576, 5005, 5720, 6160, 7280, 8008, 10010, 11440, 12320, 12437, 14560, 16016, 20020, 22880, 24874, 32032, 40040, 49748, 62185, 80080, 87059, 99496, 124370, 136807, 160160, 161681, 174118, 198992, 248740, 273614, 323362, 348236, 397984, 435295, 497480, 547228, 646724, 684035, 696472, 808405, 870590, 957649, 994960, 1094456, 1131767, 1293448, 1368070, 1392944, 1616810, 1741180, 1778491, 1915298, 1989920, 2188912, 2263534, 2586896, 2736140, 2785888, 3233620, 3482360, 3556982, 3830596, 4377824, 4527068, 4788245, 5173792, 5472280, 5658835, 6467240, 6964720, 7113964, 7661192, 8892455, 9054136, 9576490, 10944560, 11317670, 12449437, 12934480, 13929440, 14227928, 15322384, 17784910, 18108272, 19152980, 21889120, 22635340, 24898874, 25868960, 28455856, 30644768, 35569820, 36216544, 38305960, 45270680, 49797748, 56911712, 62247185, 71139640, 76611920, 90541360, 99595496, 124494370, 142279280, 153223840, 181082720, 199190992, 248988740, 284558560, 398381984, 497977480, 995954960, 1991909920]

約数ペア:

[(1, 1991909920), (2, 995954960), (4, 497977480), (5, 398381984), (7, 284558560), (8, 248988740), (10, 199190992), (11, 181082720), (13, 153223840), (14, 142279280), (16, 124494370), (20, 99595496), (22, 90541360), (26, 76611920), (28, 71139640), (32, 62247185), (35, 56911712), (40, 49797748), (44, 45270680), (52, 38305960), (55, 36216544), (56, 35569820), (65, 30644768), (70, 28455856), (77, 25868960), (80, 24898874), (88, 22635340), (91, 21889120), (104, 19152980), (110, 18108272), (112, 17784910), (130, 15322384), (140, 14227928), (143, 13929440), (154, 12934480), (160, 12449437), (176, 11317670), (182, 10944560), (208, 9576490), (220, 9054136), (224, 8892455), (260, 7661192), (280, 7113964), (286, 6964720), (308, 6467240), (352, 5658835), (364, 5472280), (385, 5173792), (416, 4788245), (440, 4527068), (455, 4377824), (520, 3830596), (560, 3556982), (572, 3482360), (616, 3233620), (715, 2785888), (728, 2736140), (770, 2586896), (880, 2263534), (910, 2188912), (1001, 1989920), (1040, 1915298), (1120, 1778491), (1144, 1741180), (1232, 1616810), (1430, 1392944), (1456, 1368070), (1540, 1293448), (1760, 1131767), (1820, 1094456), (2002, 994960), (2080, 957649), (2288, 870590), (2464, 808405), (2860, 696472), (2912, 684035), (3080, 646724), (3640, 547228), (4004, 497480), (4576, 435295), (5005, 397984), (5720, 348236), (6160, 323362), (7280, 273614), (8008, 248740), (10010, 198992), (11440, 174118), (12320, 161681), (12437, 160160), (14560, 136807), (16016, 124370), (20020, 99496), (22880, 87059), (24874, 80080), (32032, 62185), (40040, 49748)]