Cod sursa(job #2474254)

Utilizator Florinos123Gaina Florin Florinos123 Data 14 octombrie 2019 21:56:43
Problema Suma si numarul divizorilor Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.12 kb
#include <fstream>
#include <iostream>
#include <cmath>
using namespace std;
int sumdiv(int n)
{
    int d=2,p=0,num=1,numi=1,x;
    while(n>1)
    {
        p=0;
        while(n%d==0)
        {
            p++;
            n=n/d;
        }
        if(p>0)
        {
            x=pow(d,p+1);
            num=num*(x-1);
            numi=numi*(d-1);
        }

        if(d==2)
          d++;
        else
            d=d+2;
        if(n>1 && d*d>n)
            d=n;

    }
    return num/numi;
}
int nrdiv(int n)
{
    int d=2,p=0,x=1;
    while(n>1)
    {
        p=0;
        while(n%d==0)
        {
            p++;
            n=n/d;
        }
        if(p>0)
            x=x*(p+1);
        if(d==2)
            d++;
        else
            d=d+2;

        if(n>1 && d*d>n)
            d=n;
    }
    return x;
}
int main()
{
long long n,i,x,y;
ifstream f("ssnd.in");
ofstream g("ssnd.out");
f>>n;
for(i=1;i<=n;i++)
{
    f>>x;
    y=nrdiv(x);
    if(y==2)
        g<<2<<" "<<x+1<<" "<<endl;
        else
            g<<y<<" "<<sumdiv(x)<<" "<<endl;

}

    return 0;
}