第二题 阶乘约数

 

代码：

public static void main(String[] args) {
		int a = 180;
		ArrayList<Integer> list = new ArrayList<>();
		for (int i = 2; i <= 180; i++) {
			ArrayList<Integer> copylist2 = new ArrayList<>();
			for (int j = 2; j <= i; j++) {
				if (i % j == 0) {
					copylist2.add(j);
					copylist2.add(i/j);
				}
			}
			if (copylist2.size() <= 2) {
				list.add(i);
			}
			copylist2.clear();
		}
		int count = 1;
		for (int i = 0; i <list.size(); i++) {
			int t = list.get(i);
			int pq = 0;
			int fp = 180;
			while(fp % t == 0) {
				fp = fp / t;
				pq++;
			}
			count = count *(pq+1);
		}
		System.out.println(count);
	}