20887680

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:99

約数の個数: 256

約数和(自身を含む): 77552640

約数和(自身を除く): 56664960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 32, 33, 40, 43, 44, 46, 48, 55, 60, 64, 66, 69, 80, 86, 88, 92, 96, 110, 115, 120, 128, 129, 132, 138, 160, 165, 172, 176, 184, 192, 215, 220, 230, 240, 253, 258, 264, 276, 320, 330, 344, 345, 352, 368, 384, 430, 440, 460, 473, 480, 506, 516, 528, 552, 640, 645, 660, 688, 690, 704, 736, 759, 860, 880, 920, 946, 960, 989, 1012, 1032, 1056, 1104, 1265, 1290, 1320, 1376, 1380, 1408, 1419, 1472, 1518, 1720, 1760, 1840, 1892, 1920, 1978, 2024, 2064, 2112, 2208, 2365, 2530, 2580, 2640, 2752, 2760, 2838, 2944, 2967, 3036, 3440, 3520, 3680, 3784, 3795, 3956, 4048, 4128, 4224, 4416, 4730, 4945, 5060, 5160, 5280, 5504, 5520, 5676, 5934, 6072, 6880, 7040, 7095, 7360, 7568, 7590, 7912, 8096, 8256, 8832, 9460, 9890, 10120, 10320, 10560, 10879, 11040, 11352, 11868, 12144, 13760, 14190, 14720, 14835, 15136, 15180, 15824, 16192, 16512, 18920, 19780, 20240, 20640, 21120, 21758, 22080, 22704, 23736, 24288, 27520, 28380, 29670, 30272, 30360, 31648, 32384, 32637, 37840, 39560, 40480, 41280, 43516, 44160, 45408, 47472, 48576, 54395, 56760, 59340, 60544, 60720, 63296, 65274, 75680, 79120, 80960, 82560, 87032, 90816, 94944, 97152, 108790, 113520, 118680, 121440, 126592, 130548, 151360, 158240, 161920, 163185, 174064, 181632, 189888, 217580, 227040, 237360, 242880, 261096, 302720, 316480, 326370, 348128, 379776, 435160, 454080, 474720, 485760, 522192, 632960, 652740, 696256, 870320, 908160, 949440, 1044384, 1305480, 1392512, 1740640, 1898880, 2088768, 2610960, 3481280, 4177536, 5221920, 6962560, 10443840, 20887680]

約数ペア:

[(1, 20887680), (2, 10443840), (3, 6962560), (4, 5221920), (5, 4177536), (6, 3481280), (8, 2610960), (10, 2088768), (11, 1898880), (12, 1740640), (15, 1392512), (16, 1305480), (20, 1044384), (22, 949440), (23, 908160), (24, 870320), (30, 696256), (32, 652740), (33, 632960), (40, 522192), (43, 485760), (44, 474720), (46, 454080), (48, 435160), (55, 379776), (60, 348128), (64, 326370), (66, 316480), (69, 302720), (80, 261096), (86, 242880), (88, 237360), (92, 227040), (96, 217580), (110, 189888), (115, 181632), (120, 174064), (128, 163185), (129, 161920), (132, 158240), (138, 151360), (160, 130548), (165, 126592), (172, 121440), (176, 118680), (184, 113520), (192, 108790), (215, 97152), (220, 94944), (230, 90816), (240, 87032), (253, 82560), (258, 80960), (264, 79120), (276, 75680), (320, 65274), (330, 63296), (344, 60720), (345, 60544), (352, 59340), (368, 56760), (384, 54395), (430, 48576), (440, 47472), (460, 45408), (473, 44160), (480, 43516), (506, 41280), (516, 40480), (528, 39560), (552, 37840), (640, 32637), (645, 32384), (660, 31648), (688, 30360), (690, 30272), (704, 29670), (736, 28380), (759, 27520), (860, 24288), (880, 23736), (920, 22704), (946, 22080), (960, 21758), (989, 21120), (1012, 20640), (1032, 20240), (1056, 19780), (1104, 18920), (1265, 16512), (1290, 16192), (1320, 15824), (1376, 15180), (1380, 15136), (1408, 14835), (1419, 14720), (1472, 14190), (1518, 13760), (1720, 12144), (1760, 11868), (1840, 11352), (1892, 11040), (1920, 10879), (1978, 10560), (2024, 10320), (2064, 10120), (2112, 9890), (2208, 9460), (2365, 8832), (2530, 8256), (2580, 8096), (2640, 7912), (2752, 7590), (2760, 7568), (2838, 7360), (2944, 7095), (2967, 7040), (3036, 6880), (3440, 6072), (3520, 5934), (3680, 5676), (3784, 5520), (3795, 5504), (3956, 5280), (4048, 5160), (4128, 5060), (4224, 4945), (4416, 4730)]