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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define FAST ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
  4. #define ll long long
  5. const int N = 1e6 + 5;
  6. vector<int>primes;
  7. void sieve()
  8. {
  9.     vector<bool> isprime(N, 1);
  10.     for(int i = 2; i < N; i++)
  11.     {
  12.         if(!isprime[i]) continue;
  13.         primes.push_back(i);
  14.         for(int j = 2*i; j < N; j+=i)
  15.             isprime[j] = 0;
  16.     }
  17. }
  18. void solve()
  19. {
  20.     ll n;
  21.     cin >> n;
  22.     ll ans = 0, x = n;
  23.     for(auto p : primes)
  24.     {
  25.         if((ll)p*p > n) break;
  26.         if(x % p == 0)
  27.         {
  28.             ans++;
  29.             while(x % p == 0) x/=p;
  30.         }
  31.     }
  32.     if(x > 1) ans++;
  33.     cout << (1LL << ans) - 2 << endl;
  34. }
  35. int main()
  36. {
  37.     FAST;
  38.     int t = 1;
  39.     sieve();
  40.     cin >> t;
  41.     while (t--) solve();
  42.     return 0;
  43. }
  44.  
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/PnBaZz
language:
C++ (gcc 8.3)
created:
17 days ago
visibility:
public

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