8723840

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 21407760

約数和(自身を除く): 12683920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 317, 320, 344, 430, 634, 640, 688, 860, 1268, 1376, 1585, 1720, 2536, 2752, 3170, 3440, 5072, 5504, 6340, 6880, 10144, 12680, 13631, 13760, 20288, 25360, 27262, 27520, 40576, 50720, 54524, 68155, 101440, 109048, 136310, 202880, 218096, 272620, 436192, 545240, 872384, 1090480, 1744768, 2180960, 4361920, 8723840]

約数ペア:

[(1, 8723840), (2, 4361920), (4, 2180960), (5, 1744768), (8, 1090480), (10, 872384), (16, 545240), (20, 436192), (32, 272620), (40, 218096), (43, 202880), (64, 136310), (80, 109048), (86, 101440), (128, 68155), (160, 54524), (172, 50720), (215, 40576), (317, 27520), (320, 27262), (344, 25360), (430, 20288), (634, 13760), (640, 13631), (688, 12680), (860, 10144), (1268, 6880), (1376, 6340), (1585, 5504), (1720, 5072), (2536, 3440), (2752, 3170)]