127408640

素因数分解:

$2^9\times 5^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:497

約数の個数: 80

約数和(自身を含む): 308397672

約数和(自身を除く): 180989032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 314, 317, 320, 512, 628, 634, 640, 785, 1256, 1268, 1280, 1570, 1585, 2512, 2536, 2560, 3140, 3170, 5024, 5072, 6280, 6340, 10048, 10144, 12560, 12680, 20096, 20288, 25120, 25360, 40192, 40576, 49769, 50240, 50720, 80384, 81152, 99538, 100480, 101440, 162304, 199076, 200960, 202880, 248845, 398152, 401920, 405760, 497690, 796304, 811520, 995380, 1592608, 1990760, 3185216, 3981520, 6370432, 7963040, 12740864, 15926080, 25481728, 31852160, 63704320, 127408640]

約数ペア:

[(1, 127408640), (2, 63704320), (4, 31852160), (5, 25481728), (8, 15926080), (10, 12740864), (16, 7963040), (20, 6370432), (32, 3981520), (40, 3185216), (64, 1990760), (80, 1592608), (128, 995380), (157, 811520), (160, 796304), (256, 497690), (314, 405760), (317, 401920), (320, 398152), (512, 248845), (628, 202880), (634, 200960), (640, 199076), (785, 162304), (1256, 101440), (1268, 100480), (1280, 99538), (1570, 81152), (1585, 80384), (2512, 50720), (2536, 50240), (2560, 49769), (3140, 40576), (3170, 40192), (5024, 25360), (5072, 25120), (6280, 20288), (6340, 20096), (10048, 12680), (10144, 12560)]