Exactly 3 divisor

Time Limit Exceeded class Solution { public int exactly3Divisors(int N) { int a=0; for(int i=1 ; i<=N ;i++){ int count = 0; int temp = count; for(int j=1;j<=i;j++){ if(i%j==0){ temp++; } } if(temp==3){ a++; } } return a; } }