81406080

素因数分解:

$2^7\times 3^3\times 5^1\times 7^1\times {\mathrm{673}}^1$

素因数の和:708

約数の個数: 256

約数和(自身を含む): 329990400

約数和(自身を除く): 248584320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 128, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 360, 378, 384, 420, 432, 448, 480, 504, 540, 560, 576, 630, 640, 672, 673, 720, 756, 840, 864, 896, 945, 960, 1008, 1080, 1120, 1152, 1260, 1344, 1346, 1440, 1512, 1680, 1728, 1890, 1920, 2016, 2019, 2160, 2240, 2520, 2688, 2692, 2880, 3024, 3360, 3365, 3456, 3780, 4032, 4038, 4320, 4480, 4711, 5040, 5384, 5760, 6048, 6057, 6720, 6730, 7560, 8064, 8076, 8640, 9422, 10080, 10095, 10768, 12096, 12114, 13440, 13460, 14133, 15120, 16152, 17280, 18171, 18844, 20160, 20190, 21536, 23555, 24192, 24228, 26920, 28266, 30240, 30285, 32304, 36342, 37688, 40320, 40380, 42399, 43072, 47110, 48456, 53840, 56532, 60480, 60570, 64608, 70665, 72684, 75376, 80760, 84798, 86144, 90855, 94220, 96912, 107680, 113064, 120960, 121140, 127197, 129216, 141330, 145368, 150752, 161520, 169596, 181710, 188440, 193824, 211995, 215360, 226128, 242280, 254394, 258432, 282660, 290736, 301504, 323040, 339192, 363420, 376880, 387648, 423990, 430720, 452256, 484560, 508788, 565320, 581472, 603008, 635985, 646080, 678384, 726840, 753760, 775296, 847980, 904512, 969120, 1017576, 1130640, 1162944, 1271970, 1292160, 1356768, 1453680, 1507520, 1695960, 1809024, 1938240, 2035152, 2261280, 2325888, 2543940, 2713536, 2907360, 3015040, 3391920, 3876480, 4070304, 4522560, 5087880, 5427072, 5814720, 6783840, 8140608, 9045120, 10175760, 11629440, 13567680, 16281216, 20351520, 27135360, 40703040, 81406080]

約数ペア:

[(1, 81406080), (2, 40703040), (3, 27135360), (4, 20351520), (5, 16281216), (6, 13567680), (7, 11629440), (8, 10175760), (9, 9045120), (10, 8140608), (12, 6783840), (14, 5814720), (15, 5427072), (16, 5087880), (18, 4522560), (20, 4070304), (21, 3876480), (24, 3391920), (27, 3015040), (28, 2907360), (30, 2713536), (32, 2543940), (35, 2325888), (36, 2261280), (40, 2035152), (42, 1938240), (45, 1809024), (48, 1695960), (54, 1507520), (56, 1453680), (60, 1356768), (63, 1292160), (64, 1271970), (70, 1162944), (72, 1130640), (80, 1017576), (84, 969120), (90, 904512), (96, 847980), (105, 775296), (108, 753760), (112, 726840), (120, 678384), (126, 646080), (128, 635985), (135, 603008), (140, 581472), (144, 565320), (160, 508788), (168, 484560), (180, 452256), (189, 430720), (192, 423990), (210, 387648), (216, 376880), (224, 363420), (240, 339192), (252, 323040), (270, 301504), (280, 290736), (288, 282660), (315, 258432), (320, 254394), (336, 242280), (360, 226128), (378, 215360), (384, 211995), (420, 193824), (432, 188440), (448, 181710), (480, 169596), (504, 161520), (540, 150752), (560, 145368), (576, 141330), (630, 129216), (640, 127197), (672, 121140), (673, 120960), (720, 113064), (756, 107680), (840, 96912), (864, 94220), (896, 90855), (945, 86144), (960, 84798), (1008, 80760), (1080, 75376), (1120, 72684), (1152, 70665), (1260, 64608), (1344, 60570), (1346, 60480), (1440, 56532), (1512, 53840), (1680, 48456), (1728, 47110), (1890, 43072), (1920, 42399), (2016, 40380), (2019, 40320), (2160, 37688), (2240, 36342), (2520, 32304), (2688, 30285), (2692, 30240), (2880, 28266), (3024, 26920), (3360, 24228), (3365, 24192), (3456, 23555), (3780, 21536), (4032, 20190), (4038, 20160), (4320, 18844), (4480, 18171), (4711, 17280), (5040, 16152), (5384, 15120), (5760, 14133), (6048, 13460), (6057, 13440), (6720, 12114), (6730, 12096), (7560, 10768), (8064, 10095), (8076, 10080), (8640, 9422)]