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Cod sursa(job #933482)
#include <fstream>
#include <algorithm>
#define mod 9901
using namespace std;
long long putere(long long bz, long long xp)
{
if(xp==0)
return 1;
else if(xp%2) return (((bz%mod*(putere(bz, xp/2)%mod))%mod)*(putere(bz, xp/2)%mod))%mod;
return (((putere(bz, xp/2))%mod)*(putere(bz, xp/2)%mod))%mod;
}
long long a, b, aux, phi, i, pr[1000001], ex[1000001];
long long rez, k;
int main()
{
ifstream f("sumdiv.in");
ofstream g("sumdiv.out");
f>>a>>b;
phi=mod-1;
for(i=2; i*i<=a; i++)
{
if(a%i==0)
{
k++;
pr[k]=i;
while(a%i==0)
{
ex[k]++;
a/=i;
}
}
}
if(a!=1)
{
k++;
pr[k]=a;
ex[k]++;
}
rez=1;
for(i=1; i<=k; i++)
{
ex[i]*=b;
rez=(rez*(((putere(pr[i], ex[i]+1))-1)%mod*(putere(pr[i]-1, phi-1)%mod))%mod)%mod;
}
g<<rez;
}