20711040

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:119

約数の個数: 256

約数和(自身を含む): 79902720

約数和(自身を除く): 59191680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 64, 67, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 128, 134, 138, 140, 160, 161, 168, 184, 192, 201, 210, 224, 230, 240, 268, 276, 280, 320, 322, 335, 336, 345, 368, 384, 402, 420, 448, 460, 469, 480, 483, 536, 552, 560, 640, 644, 670, 672, 690, 736, 804, 805, 840, 896, 920, 938, 960, 966, 1005, 1072, 1104, 1120, 1288, 1340, 1344, 1380, 1407, 1472, 1541, 1608, 1610, 1680, 1840, 1876, 1920, 1932, 2010, 2144, 2208, 2240, 2345, 2415, 2576, 2680, 2688, 2760, 2814, 2944, 3082, 3216, 3220, 3360, 3680, 3752, 3864, 4020, 4288, 4416, 4480, 4623, 4690, 4830, 5152, 5360, 5520, 5628, 6164, 6432, 6440, 6720, 7035, 7360, 7504, 7705, 7728, 8040, 8576, 8832, 9246, 9380, 9660, 10304, 10720, 10787, 11040, 11256, 12328, 12864, 12880, 13440, 14070, 14720, 15008, 15410, 15456, 16080, 18492, 18760, 19320, 20608, 21440, 21574, 22080, 22512, 23115, 24656, 25728, 25760, 28140, 30016, 30820, 30912, 32160, 32361, 36984, 37520, 38640, 42880, 43148, 44160, 45024, 46230, 49312, 51520, 53935, 56280, 60032, 61640, 61824, 64320, 64722, 73968, 75040, 77280, 86296, 90048, 92460, 98624, 103040, 107870, 112560, 123280, 128640, 129444, 147936, 150080, 154560, 161805, 172592, 180096, 184920, 197248, 215740, 225120, 246560, 258888, 295872, 300160, 309120, 323610, 345184, 369840, 431480, 450240, 493120, 517776, 591744, 647220, 690368, 739680, 862960, 900480, 986240, 1035552, 1294440, 1380736, 1479360, 1725920, 2071104, 2588880, 2958720, 3451840, 4142208, 5177760, 6903680, 10355520, 20711040]

約数ペア:

[(1, 20711040), (2, 10355520), (3, 6903680), (4, 5177760), (5, 4142208), (6, 3451840), (7, 2958720), (8, 2588880), (10, 2071104), (12, 1725920), (14, 1479360), (15, 1380736), (16, 1294440), (20, 1035552), (21, 986240), (23, 900480), (24, 862960), (28, 739680), (30, 690368), (32, 647220), (35, 591744), (40, 517776), (42, 493120), (46, 450240), (48, 431480), (56, 369840), (60, 345184), (64, 323610), (67, 309120), (69, 300160), (70, 295872), (80, 258888), (84, 246560), (92, 225120), (96, 215740), (105, 197248), (112, 184920), (115, 180096), (120, 172592), (128, 161805), (134, 154560), (138, 150080), (140, 147936), (160, 129444), (161, 128640), (168, 123280), (184, 112560), (192, 107870), (201, 103040), (210, 98624), (224, 92460), (230, 90048), (240, 86296), (268, 77280), (276, 75040), (280, 73968), (320, 64722), (322, 64320), (335, 61824), (336, 61640), (345, 60032), (368, 56280), (384, 53935), (402, 51520), (420, 49312), (448, 46230), (460, 45024), (469, 44160), (480, 43148), (483, 42880), (536, 38640), (552, 37520), (560, 36984), (640, 32361), (644, 32160), (670, 30912), (672, 30820), (690, 30016), (736, 28140), (804, 25760), (805, 25728), (840, 24656), (896, 23115), (920, 22512), (938, 22080), (960, 21574), (966, 21440), (1005, 20608), (1072, 19320), (1104, 18760), (1120, 18492), (1288, 16080), (1340, 15456), (1344, 15410), (1380, 15008), (1407, 14720), (1472, 14070), (1541, 13440), (1608, 12880), (1610, 12864), (1680, 12328), (1840, 11256), (1876, 11040), (1920, 10787), (1932, 10720), (2010, 10304), (2144, 9660), (2208, 9380), (2240, 9246), (2345, 8832), (2415, 8576), (2576, 8040), (2680, 7728), (2688, 7705), (2760, 7504), (2814, 7360), (2944, 7035), (3082, 6720), (3216, 6440), (3220, 6432), (3360, 6164), (3680, 5628), (3752, 5520), (3864, 5360), (4020, 5152), (4288, 4830), (4416, 4690), (4480, 4623)]