20782080

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:83

約数の個数: 264

約数和(自身を含む): 80471664

約数和(自身を除く): 59689584

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 41, 44, 45, 48, 55, 60, 64, 66, 72, 80, 82, 88, 90, 96, 99, 110, 120, 123, 128, 132, 144, 160, 164, 165, 176, 180, 192, 198, 205, 220, 240, 246, 256, 264, 288, 320, 328, 330, 352, 360, 369, 384, 396, 410, 440, 451, 480, 492, 495, 512, 528, 576, 615, 640, 656, 660, 704, 720, 738, 768, 792, 820, 880, 902, 960, 984, 990, 1024, 1056, 1152, 1230, 1280, 1312, 1320, 1353, 1408, 1440, 1476, 1536, 1584, 1640, 1760, 1804, 1845, 1920, 1968, 1980, 2112, 2255, 2304, 2460, 2560, 2624, 2640, 2706, 2816, 2880, 2952, 3072, 3168, 3280, 3520, 3608, 3690, 3840, 3936, 3960, 4059, 4224, 4510, 4608, 4920, 5120, 5248, 5280, 5412, 5632, 5760, 5904, 6336, 6560, 6765, 7040, 7216, 7380, 7680, 7872, 7920, 8118, 8448, 9020, 9216, 9840, 10496, 10560, 10824, 11264, 11520, 11808, 12672, 13120, 13530, 14080, 14432, 14760, 15360, 15744, 15840, 16236, 16896, 18040, 19680, 20295, 20992, 21120, 21648, 23040, 23616, 25344, 26240, 27060, 28160, 28864, 29520, 31488, 31680, 32472, 33792, 36080, 39360, 40590, 41984, 42240, 43296, 46080, 47232, 50688, 52480, 54120, 56320, 57728, 59040, 62976, 63360, 64944, 72160, 78720, 81180, 84480, 86592, 94464, 101376, 104960, 108240, 115456, 118080, 125952, 126720, 129888, 144320, 157440, 162360, 168960, 173184, 188928, 209920, 216480, 230912, 236160, 253440, 259776, 288640, 314880, 324720, 346368, 377856, 432960, 461824, 472320, 506880, 519552, 577280, 629760, 649440, 692736, 865920, 944640, 1039104, 1154560, 1298880, 1385472, 1731840, 1889280, 2078208, 2309120, 2597760, 3463680, 4156416, 5195520, 6927360, 10391040, 20782080]

約数ペア:

[(1, 20782080), (2, 10391040), (3, 6927360), (4, 5195520), (5, 4156416), (6, 3463680), (8, 2597760), (9, 2309120), (10, 2078208), (11, 1889280), (12, 1731840), (15, 1385472), (16, 1298880), (18, 1154560), (20, 1039104), (22, 944640), (24, 865920), (30, 692736), (32, 649440), (33, 629760), (36, 577280), (40, 519552), (41, 506880), (44, 472320), (45, 461824), (48, 432960), (55, 377856), (60, 346368), (64, 324720), (66, 314880), (72, 288640), (80, 259776), (82, 253440), (88, 236160), (90, 230912), (96, 216480), (99, 209920), (110, 188928), (120, 173184), (123, 168960), (128, 162360), (132, 157440), (144, 144320), (160, 129888), (164, 126720), (165, 125952), (176, 118080), (180, 115456), (192, 108240), (198, 104960), (205, 101376), (220, 94464), (240, 86592), (246, 84480), (256, 81180), (264, 78720), (288, 72160), (320, 64944), (328, 63360), (330, 62976), (352, 59040), (360, 57728), (369, 56320), (384, 54120), (396, 52480), (410, 50688), (440, 47232), (451, 46080), (480, 43296), (492, 42240), (495, 41984), (512, 40590), (528, 39360), (576, 36080), (615, 33792), (640, 32472), (656, 31680), (660, 31488), (704, 29520), (720, 28864), (738, 28160), (768, 27060), (792, 26240), (820, 25344), (880, 23616), (902, 23040), (960, 21648), (984, 21120), (990, 20992), (1024, 20295), (1056, 19680), (1152, 18040), (1230, 16896), (1280, 16236), (1312, 15840), (1320, 15744), (1353, 15360), (1408, 14760), (1440, 14432), (1476, 14080), (1536, 13530), (1584, 13120), (1640, 12672), (1760, 11808), (1804, 11520), (1845, 11264), (1920, 10824), (1968, 10560), (1980, 10496), (2112, 9840), (2255, 9216), (2304, 9020), (2460, 8448), (2560, 8118), (2624, 7920), (2640, 7872), (2706, 7680), (2816, 7380), (2880, 7216), (2952, 7040), (3072, 6765), (3168, 6560), (3280, 6336), (3520, 5904), (3608, 5760), (3690, 5632), (3840, 5412), (3936, 5280), (3960, 5248), (4059, 5120), (4224, 4920), (4510, 4608)]