So Q is just little q to the capital N power, N And then we've seen you have to divide by N factorial to avoid the overcounting of configurations that are in fact not distinguishable.

所以Q就是小q的大N次方，是粒子数目，the，number，of，particles。,然后我们知道你还要除以N的阶乘,以避免对不可分辨,的构型的重复计数。