20839680

素因数分解:

$2^8\times 3^5\times 5^1\times {\mathrm{67}}^1$

素因数の和:103

約数の個数: 216

約数和(自身を含む): 75889632

約数和(自身を除く): 55049952

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 67, 72, 80, 81, 90, 96, 108, 120, 128, 134, 135, 144, 160, 162, 180, 192, 201, 216, 240, 243, 256, 268, 270, 288, 320, 324, 335, 360, 384, 402, 405, 432, 480, 486, 536, 540, 576, 603, 640, 648, 670, 720, 768, 804, 810, 864, 960, 972, 1005, 1072, 1080, 1152, 1206, 1215, 1280, 1296, 1340, 1440, 1608, 1620, 1728, 1809, 1920, 1944, 2010, 2144, 2160, 2304, 2412, 2430, 2592, 2680, 2880, 3015, 3216, 3240, 3456, 3618, 3840, 3888, 4020, 4288, 4320, 4824, 4860, 5184, 5360, 5427, 5760, 6030, 6432, 6480, 6912, 7236, 7776, 8040, 8576, 8640, 9045, 9648, 9720, 10368, 10720, 10854, 11520, 12060, 12864, 12960, 14472, 15552, 16080, 16281, 17152, 17280, 18090, 19296, 19440, 20736, 21440, 21708, 24120, 25728, 25920, 27135, 28944, 31104, 32160, 32562, 34560, 36180, 38592, 38880, 42880, 43416, 48240, 51456, 51840, 54270, 57888, 62208, 64320, 65124, 72360, 77184, 77760, 81405, 85760, 86832, 96480, 103680, 108540, 115776, 128640, 130248, 144720, 154368, 155520, 162810, 173664, 192960, 217080, 231552, 257280, 260496, 289440, 311040, 325620, 347328, 385920, 434160, 463104, 520992, 578880, 651240, 694656, 771840, 868320, 1041984, 1157760, 1302480, 1389312, 1736640, 2083968, 2315520, 2604960, 3473280, 4167936, 5209920, 6946560, 10419840, 20839680]

約数ペア:

[(1, 20839680), (2, 10419840), (3, 6946560), (4, 5209920), (5, 4167936), (6, 3473280), (8, 2604960), (9, 2315520), (10, 2083968), (12, 1736640), (15, 1389312), (16, 1302480), (18, 1157760), (20, 1041984), (24, 868320), (27, 771840), (30, 694656), (32, 651240), (36, 578880), (40, 520992), (45, 463104), (48, 434160), (54, 385920), (60, 347328), (64, 325620), (67, 311040), (72, 289440), (80, 260496), (81, 257280), (90, 231552), (96, 217080), (108, 192960), (120, 173664), (128, 162810), (134, 155520), (135, 154368), (144, 144720), (160, 130248), (162, 128640), (180, 115776), (192, 108540), (201, 103680), (216, 96480), (240, 86832), (243, 85760), (256, 81405), (268, 77760), (270, 77184), (288, 72360), (320, 65124), (324, 64320), (335, 62208), (360, 57888), (384, 54270), (402, 51840), (405, 51456), (432, 48240), (480, 43416), (486, 42880), (536, 38880), (540, 38592), (576, 36180), (603, 34560), (640, 32562), (648, 32160), (670, 31104), (720, 28944), (768, 27135), (804, 25920), (810, 25728), (864, 24120), (960, 21708), (972, 21440), (1005, 20736), (1072, 19440), (1080, 19296), (1152, 18090), (1206, 17280), (1215, 17152), (1280, 16281), (1296, 16080), (1340, 15552), (1440, 14472), (1608, 12960), (1620, 12864), (1728, 12060), (1809, 11520), (1920, 10854), (1944, 10720), (2010, 10368), (2144, 9720), (2160, 9648), (2304, 9045), (2412, 8640), (2430, 8576), (2592, 8040), (2680, 7776), (2880, 7236), (3015, 6912), (3216, 6480), (3240, 6432), (3456, 6030), (3618, 5760), (3840, 5427), (3888, 5360), (4020, 5184), (4288, 4860), (4320, 4824)]