CSU 1416 Practical Number

#include <stdio.h>
#include <string.h>
#include <iostream>
using namespace std;

#define N 100005

typedef long long LL;

bool vis[N];
int p[N], k=0;

void get_prime()
{
    for(int i = 2; i < N; i++)
    {
        if(!vis[i])
        {
            p[k++] = i;
            for(int j = i + i; j < N; j += i)
                vis[j] = 1;
        }
    }
}

bool ok(LL n)
{
    if(n == 1) return 1;
    if(n&1) return 0;
    LL al = 1;
    for(int i = 0; i < k; i++)
    {
        if(n % p[i] == 0)
        {
            if(p[i] > al + 1 && p[i] != 2) return 0;
            LL s = 1;
            LL tmp = 1;
            while(n%p[i] == 0)
            {
                n /= p[i];
                tmp *= p[i];
                s += tmp;
            }
            al *= s;
        }
    }
    if(n > al + 1) return 0;
    return 1;
}

int main()
{

    int t; LL n;
    get_prime();
    cin >> t;
    while(t--)
    {
        cin >> n;
        if(ok(n)) cout << "Yes" << endl;
        else cout << "No" << endl;
    }
    return 0;
}