20805120

素因数分解:

$2^9\times 3^3\times 5^1\times 7^1\times {\mathrm{43}}^1$

素因数の和:82

約数の個数: 320

約数和(自身を含む): 86423040

約数和(自身を除く): 65617920

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, 43, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 86, 90, 96, 105, 108, 112, 120, 126, 128, 129, 135, 140, 144, 160, 168, 172, 180, 189, 192, 210, 215, 216, 224, 240, 252, 256, 258, 270, 280, 288, 301, 315, 320, 336, 344, 360, 378, 384, 387, 420, 430, 432, 448, 480, 504, 512, 516, 540, 560, 576, 602, 630, 640, 645, 672, 688, 720, 756, 768, 774, 840, 860, 864, 896, 903, 945, 960, 1008, 1032, 1080, 1120, 1152, 1161, 1204, 1260, 1280, 1290, 1344, 1376, 1440, 1505, 1512, 1536, 1548, 1680, 1720, 1728, 1792, 1806, 1890, 1920, 1935, 2016, 2064, 2160, 2240, 2304, 2322, 2408, 2520, 2560, 2580, 2688, 2709, 2752, 2880, 3010, 3024, 3096, 3360, 3440, 3456, 3584, 3612, 3780, 3840, 3870, 4032, 4128, 4320, 4480, 4515, 4608, 4644, 4816, 5040, 5160, 5376, 5418, 5504, 5760, 5805, 6020, 6048, 6192, 6720, 6880, 6912, 7224, 7560, 7680, 7740, 8064, 8127, 8256, 8640, 8960, 9030, 9288, 9632, 10080, 10320, 10752, 10836, 11008, 11520, 11610, 12040, 12096, 12384, 13440, 13545, 13760, 13824, 14448, 15120, 15480, 16128, 16254, 16512, 17280, 17920, 18060, 18576, 19264, 20160, 20640, 21672, 22016, 23040, 23220, 24080, 24192, 24768, 26880, 27090, 27520, 28896, 30240, 30960, 32256, 32508, 33024, 34560, 36120, 37152, 38528, 40320, 40635, 41280, 43344, 46440, 48160, 48384, 49536, 53760, 54180, 55040, 57792, 60480, 61920, 65016, 66048, 69120, 72240, 74304, 77056, 80640, 81270, 82560, 86688, 92880, 96320, 96768, 99072, 108360, 110080, 115584, 120960, 123840, 130032, 144480, 148608, 154112, 161280, 162540, 165120, 173376, 185760, 192640, 198144, 216720, 231168, 241920, 247680, 260064, 288960, 297216, 325080, 330240, 346752, 371520, 385280, 433440, 462336, 483840, 495360, 520128, 577920, 594432, 650160, 693504, 743040, 770560, 866880, 990720, 1040256, 1155840, 1300320, 1387008, 1486080, 1733760, 2080512, 2311680, 2600640, 2972160, 3467520, 4161024, 5201280, 6935040, 10402560, 20805120]

約数ペア:

[(1, 20805120), (2, 10402560), (3, 6935040), (4, 5201280), (5, 4161024), (6, 3467520), (7, 2972160), (8, 2600640), (9, 2311680), (10, 2080512), (12, 1733760), (14, 1486080), (15, 1387008), (16, 1300320), (18, 1155840), (20, 1040256), (21, 990720), (24, 866880), (27, 770560), (28, 743040), (30, 693504), (32, 650160), (35, 594432), (36, 577920), (40, 520128), (42, 495360), (43, 483840), (45, 462336), (48, 433440), (54, 385280), (56, 371520), (60, 346752), (63, 330240), (64, 325080), (70, 297216), (72, 288960), (80, 260064), (84, 247680), (86, 241920), (90, 231168), (96, 216720), (105, 198144), (108, 192640), (112, 185760), (120, 173376), (126, 165120), (128, 162540), (129, 161280), (135, 154112), (140, 148608), (144, 144480), (160, 130032), (168, 123840), (172, 120960), (180, 115584), (189, 110080), (192, 108360), (210, 99072), (215, 96768), (216, 96320), (224, 92880), (240, 86688), (252, 82560), (256, 81270), (258, 80640), (270, 77056), (280, 74304), (288, 72240), (301, 69120), (315, 66048), (320, 65016), (336, 61920), (344, 60480), (360, 57792), (378, 55040), (384, 54180), (387, 53760), (420, 49536), (430, 48384), (432, 48160), (448, 46440), (480, 43344), (504, 41280), (512, 40635), (516, 40320), (540, 38528), (560, 37152), (576, 36120), (602, 34560), (630, 33024), (640, 32508), (645, 32256), (672, 30960), (688, 30240), (720, 28896), (756, 27520), (768, 27090), (774, 26880), (840, 24768), (860, 24192), (864, 24080), (896, 23220), (903, 23040), (945, 22016), (960, 21672), (1008, 20640), (1032, 20160), (1080, 19264), (1120, 18576), (1152, 18060), (1161, 17920), (1204, 17280), (1260, 16512), (1280, 16254), (1290, 16128), (1344, 15480), (1376, 15120), (1440, 14448), (1505, 13824), (1512, 13760), (1536, 13545), (1548, 13440), (1680, 12384), (1720, 12096), (1728, 12040), (1792, 11610), (1806, 11520), (1890, 11008), (1920, 10836), (1935, 10752), (2016, 10320), (2064, 10080), (2160, 9632), (2240, 9288), (2304, 9030), (2322, 8960), (2408, 8640), (2520, 8256), (2560, 8127), (2580, 8064), (2688, 7740), (2709, 7680), (2752, 7560), (2880, 7224), (3010, 6912), (3024, 6880), (3096, 6720), (3360, 6192), (3440, 6048), (3456, 6020), (3584, 5805), (3612, 5760), (3780, 5504), (3840, 5418), (3870, 5376), (4032, 5160), (4128, 5040), (4320, 4816), (4480, 4644), (4515, 4608)]