856191920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{248893}}^1$

素因数の和:248949

約数の個数: 40

約数和(自身を含む): 2036948496

約数和(自身を除く): 1180756576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 248893, 497786, 995572, 1244465, 1991144, 2488930, 3982288, 4977860, 9955720, 10702399, 19911440, 21404798, 42809596, 53511995, 85619192, 107023990, 171238384, 214047980, 428095960, 856191920]

約数ペア:

[(1, 856191920), (2, 428095960), (4, 214047980), (5, 171238384), (8, 107023990), (10, 85619192), (16, 53511995), (20, 42809596), (40, 21404798), (43, 19911440), (80, 10702399), (86, 9955720), (172, 4977860), (215, 3982288), (344, 2488930), (430, 1991144), (688, 1244465), (860, 995572), (1720, 497786), (3440, 248893)]