20401920

素因数分解:

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

素因数の和:68

約数の個数: 432

約数和(自身を含む): 91832832

約数和(自身を除く): 71430912

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 23, 24, 28, 30, 32, 33, 35, 36, 40, 42, 44, 45, 46, 48, 55, 56, 60, 63, 64, 66, 69, 70, 72, 77, 80, 84, 88, 90, 92, 96, 99, 105, 110, 112, 115, 120, 126, 128, 132, 138, 140, 144, 154, 160, 161, 165, 168, 176, 180, 184, 192, 198, 207, 210, 220, 224, 230, 231, 240, 252, 253, 256, 264, 276, 280, 288, 308, 315, 320, 322, 330, 336, 345, 352, 360, 368, 384, 385, 396, 414, 420, 440, 448, 460, 462, 480, 483, 495, 504, 506, 528, 552, 560, 576, 616, 630, 640, 644, 660, 672, 690, 693, 704, 720, 736, 759, 768, 770, 792, 805, 828, 840, 880, 896, 920, 924, 960, 966, 990, 1008, 1012, 1035, 1056, 1104, 1120, 1152, 1155, 1232, 1260, 1265, 1280, 1288, 1320, 1344, 1380, 1386, 1408, 1440, 1449, 1472, 1518, 1540, 1584, 1610, 1656, 1680, 1760, 1771, 1792, 1840, 1848, 1920, 1932, 1980, 2016, 2024, 2070, 2112, 2208, 2240, 2277, 2304, 2310, 2415, 2464, 2520, 2530, 2576, 2640, 2688, 2760, 2772, 2816, 2880, 2898, 2944, 3036, 3080, 3168, 3220, 3312, 3360, 3465, 3520, 3542, 3680, 3696, 3795, 3840, 3864, 3960, 4032, 4048, 4140, 4224, 4416, 4480, 4554, 4620, 4830, 4928, 5040, 5060, 5152, 5280, 5313, 5376, 5520, 5544, 5760, 5796, 5888, 6072, 6160, 6336, 6440, 6624, 6720, 6930, 7040, 7084, 7245, 7360, 7392, 7590, 7728, 7920, 8064, 8096, 8280, 8448, 8832, 8855, 8960, 9108, 9240, 9660, 9856, 10080, 10120, 10304, 10560, 10626, 11040, 11088, 11385, 11520, 11592, 12144, 12320, 12672, 12880, 13248, 13440, 13860, 14080, 14168, 14490, 14720, 14784, 15180, 15456, 15840, 15939, 16128, 16192, 16560, 17664, 17710, 18216, 18480, 19320, 19712, 20160, 20240, 20608, 21120, 21252, 22080, 22176, 22770, 23184, 24288, 24640, 25344, 25760, 26496, 26565, 26880, 27720, 28336, 28980, 29440, 29568, 30360, 30912, 31680, 31878, 32384, 33120, 35420, 36432, 36960, 38640, 40320, 40480, 41216, 42240, 42504, 44160, 44352, 45540, 46368, 48576, 49280, 51520, 52992, 53130, 55440, 56672, 57960, 59136, 60720, 61824, 63360, 63756, 64768, 66240, 70840, 72864, 73920, 77280, 79695, 80640, 80960, 85008, 88320, 88704, 91080, 92736, 97152, 98560, 103040, 106260, 110880, 113344, 115920, 121440, 123648, 126720, 127512, 132480, 141680, 145728, 147840, 154560, 159390, 161920, 170016, 177408, 182160, 185472, 194304, 206080, 212520, 221760, 226688, 231840, 242880, 255024, 264960, 283360, 291456, 295680, 309120, 318780, 323840, 340032, 364320, 370944, 425040, 443520, 453376, 463680, 485760, 510048, 566720, 582912, 618240, 637560, 680064, 728640, 850080, 887040, 927360, 971520, 1020096, 1133440, 1275120, 1360128, 1457280, 1700160, 1854720, 2040192, 2266880, 2550240, 2914560, 3400320, 4080384, 5100480, 6800640, 10200960, 20401920]

約数ペア:

[(1, 20401920), (2, 10200960), (3, 6800640), (4, 5100480), (5, 4080384), (6, 3400320), (7, 2914560), (8, 2550240), (9, 2266880), (10, 2040192), (11, 1854720), (12, 1700160), (14, 1457280), (15, 1360128), (16, 1275120), (18, 1133440), (20, 1020096), (21, 971520), (22, 927360), (23, 887040), (24, 850080), (28, 728640), (30, 680064), (32, 637560), (33, 618240), (35, 582912), (36, 566720), (40, 510048), (42, 485760), (44, 463680), (45, 453376), (46, 443520), (48, 425040), (55, 370944), (56, 364320), (60, 340032), (63, 323840), (64, 318780), (66, 309120), (69, 295680), (70, 291456), (72, 283360), (77, 264960), (80, 255024), (84, 242880), (88, 231840), (90, 226688), (92, 221760), (96, 212520), (99, 206080), (105, 194304), (110, 185472), (112, 182160), (115, 177408), (120, 170016), (126, 161920), (128, 159390), (132, 154560), (138, 147840), (140, 145728), (144, 141680), (154, 132480), (160, 127512), (161, 126720), (165, 123648), (168, 121440), (176, 115920), (180, 113344), (184, 110880), (192, 106260), (198, 103040), (207, 98560), (210, 97152), (220, 92736), (224, 91080), (230, 88704), (231, 88320), (240, 85008), (252, 80960), (253, 80640), (256, 79695), (264, 77280), (276, 73920), (280, 72864), (288, 70840), (308, 66240), (315, 64768), (320, 63756), (322, 63360), (330, 61824), (336, 60720), (345, 59136), (352, 57960), (360, 56672), (368, 55440), (384, 53130), (385, 52992), (396, 51520), (414, 49280), (420, 48576), (440, 46368), (448, 45540), (460, 44352), (462, 44160), (480, 42504), (483, 42240), (495, 41216), (504, 40480), (506, 40320), (528, 38640), (552, 36960), (560, 36432), (576, 35420), (616, 33120), (630, 32384), (640, 31878), (644, 31680), (660, 30912), (672, 30360), (690, 29568), (693, 29440), (704, 28980), (720, 28336), (736, 27720), (759, 26880), (768, 26565), (770, 26496), (792, 25760), (805, 25344), (828, 24640), (840, 24288), (880, 23184), (896, 22770), (920, 22176), (924, 22080), (960, 21252), (966, 21120), (990, 20608), (1008, 20240), (1012, 20160), (1035, 19712), (1056, 19320), (1104, 18480), (1120, 18216), (1152, 17710), (1155, 17664), (1232, 16560), (1260, 16192), (1265, 16128), (1280, 15939), (1288, 15840), (1320, 15456), (1344, 15180), (1380, 14784), (1386, 14720), (1408, 14490), (1440, 14168), (1449, 14080), (1472, 13860), (1518, 13440), (1540, 13248), (1584, 12880), (1610, 12672), (1656, 12320), (1680, 12144), (1760, 11592), (1771, 11520), (1792, 11385), (1840, 11088), (1848, 11040), (1920, 10626), (1932, 10560), (1980, 10304), (2016, 10120), (2024, 10080), (2070, 9856), (2112, 9660), (2208, 9240), (2240, 9108), (2277, 8960), (2304, 8855), (2310, 8832), (2415, 8448), (2464, 8280), (2520, 8096), (2530, 8064), (2576, 7920), (2640, 7728), (2688, 7590), (2760, 7392), (2772, 7360), (2816, 7245), (2880, 7084), (2898, 7040), (2944, 6930), (3036, 6720), (3080, 6624), (3168, 6440), (3220, 6336), (3312, 6160), (3360, 6072), (3465, 5888), (3520, 5796), (3542, 5760), (3680, 5544), (3696, 5520), (3795, 5376), (3840, 5313), (3864, 5280), (3960, 5152), (4032, 5060), (4048, 5040), (4140, 4928), (4224, 4830), (4416, 4620), (4480, 4554)]