摘要：N!的阶乘的质因数分解 对于N的阶乘 比如8！ 我们要算其中一个质因数出现次数 我们注意到 8！=1 2 3 4 5 6 7 8 1 1 1 1 2的倍数出现的次数8/2=4 1 1 4的倍数出现的次数(8/2)/2=2 1 8的倍数出现的次数(8/2/2)/2=1 所以8!阶乘质因数分解有1+2+ 阅读全文

摘要：Print Article Problem Description Zero has an old printer that doesn't work well sometimes. As it is antique, he still like to use it to print article 阅读全文