1991261440

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:233

約数の個数: 288

約数和(自身を含む): 5764276224

約数和(自身を除く): 3773014784

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 67, 70, 80, 107, 112, 124, 128, 134, 140, 155, 160, 214, 217, 224, 248, 256, 268, 280, 310, 320, 335, 428, 434, 448, 469, 496, 535, 536, 560, 620, 640, 670, 749, 856, 868, 896, 938, 992, 1070, 1072, 1085, 1120, 1240, 1280, 1340, 1498, 1712, 1736, 1792, 1876, 1984, 2077, 2140, 2144, 2170, 2240, 2345, 2480, 2680, 2996, 3317, 3424, 3472, 3745, 3752, 3968, 4154, 4280, 4288, 4340, 4480, 4690, 4960, 5360, 5992, 6634, 6848, 6944, 7169, 7490, 7504, 7936, 8308, 8560, 8576, 8680, 8960, 9380, 9920, 10385, 10720, 11984, 13268, 13696, 13888, 14338, 14539, 14980, 15008, 16585, 16616, 17120, 17152, 17360, 18760, 19840, 20770, 21440, 23219, 23968, 26536, 27392, 27776, 28676, 29078, 29960, 30016, 33170, 33232, 34240, 34720, 35845, 37520, 39680, 41540, 42880, 46438, 47936, 50183, 53072, 55552, 57352, 58156, 59920, 60032, 66340, 66464, 68480, 69440, 71690, 72695, 75040, 83080, 85760, 92876, 95872, 100366, 106144, 114704, 116095, 116312, 119840, 120064, 132680, 132928, 136960, 138880, 143380, 145390, 150080, 166160, 185752, 191744, 200732, 212288, 222239, 229408, 232190, 232624, 239680, 250915, 265360, 265856, 277760, 286760, 290780, 300160, 332320, 371504, 401464, 424576, 444478, 458816, 464380, 465248, 479360, 501830, 530720, 531712, 573520, 581560, 600320, 664640, 743008, 802928, 849152, 888956, 917632, 928760, 930496, 958720, 1003660, 1061440, 1111195, 1147040, 1163120, 1329280, 1486016, 1555673, 1605856, 1777912, 1835264, 1857520, 1860992, 2007320, 2122880, 2222390, 2294080, 2326240, 2658560, 2972032, 3111346, 3211712, 3555824, 3715040, 3721984, 4014640, 4245760, 4444780, 4588160, 4652480, 5944064, 6222692, 6423424, 7111648, 7430080, 7778365, 8029280, 8889560, 9176320, 9304960, 12445384, 12846848, 14223296, 14860160, 15556730, 16058560, 17779120, 18609920, 24890768, 28446592, 29720320, 31113460, 32117120, 35558240, 49781536, 56893184, 62226920, 64234240, 71116480, 99563072, 124453840, 142232960, 199126144, 248907680, 284465920, 398252288, 497815360, 995630720, 1991261440]

約数ペア:

[(1, 1991261440), (2, 995630720), (4, 497815360), (5, 398252288), (7, 284465920), (8, 248907680), (10, 199126144), (14, 142232960), (16, 124453840), (20, 99563072), (28, 71116480), (31, 64234240), (32, 62226920), (35, 56893184), (40, 49781536), (56, 35558240), (62, 32117120), (64, 31113460), (67, 29720320), (70, 28446592), (80, 24890768), (107, 18609920), (112, 17779120), (124, 16058560), (128, 15556730), (134, 14860160), (140, 14223296), (155, 12846848), (160, 12445384), (214, 9304960), (217, 9176320), (224, 8889560), (248, 8029280), (256, 7778365), (268, 7430080), (280, 7111648), (310, 6423424), (320, 6222692), (335, 5944064), (428, 4652480), (434, 4588160), (448, 4444780), (469, 4245760), (496, 4014640), (535, 3721984), (536, 3715040), (560, 3555824), (620, 3211712), (640, 3111346), (670, 2972032), (749, 2658560), (856, 2326240), (868, 2294080), (896, 2222390), (938, 2122880), (992, 2007320), (1070, 1860992), (1072, 1857520), (1085, 1835264), (1120, 1777912), (1240, 1605856), (1280, 1555673), (1340, 1486016), (1498, 1329280), (1712, 1163120), (1736, 1147040), (1792, 1111195), (1876, 1061440), (1984, 1003660), (2077, 958720), (2140, 930496), (2144, 928760), (2170, 917632), (2240, 888956), (2345, 849152), (2480, 802928), (2680, 743008), (2996, 664640), (3317, 600320), (3424, 581560), (3472, 573520), (3745, 531712), (3752, 530720), (3968, 501830), (4154, 479360), (4280, 465248), (4288, 464380), (4340, 458816), (4480, 444478), (4690, 424576), (4960, 401464), (5360, 371504), (5992, 332320), (6634, 300160), (6848, 290780), (6944, 286760), (7169, 277760), (7490, 265856), (7504, 265360), (7936, 250915), (8308, 239680), (8560, 232624), (8576, 232190), (8680, 229408), (8960, 222239), (9380, 212288), (9920, 200732), (10385, 191744), (10720, 185752), (11984, 166160), (13268, 150080), (13696, 145390), (13888, 143380), (14338, 138880), (14539, 136960), (14980, 132928), (15008, 132680), (16585, 120064), (16616, 119840), (17120, 116312), (17152, 116095), (17360, 114704), (18760, 106144), (19840, 100366), (20770, 95872), (21440, 92876), (23219, 85760), (23968, 83080), (26536, 75040), (27392, 72695), (27776, 71690), (28676, 69440), (29078, 68480), (29960, 66464), (30016, 66340), (33170, 60032), (33232, 59920), (34240, 58156), (34720, 57352), (35845, 55552), (37520, 53072), (39680, 50183), (41540, 47936), (42880, 46438)]