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Cod sursa(job #181195)
#include <stdio.h>
#include <math.h>
unsigned long a,b,i,c,nr,sq;
unsigned long long p=1;
void factorizare(long,long);
int main()
{
freopen ("sumdiv.in","r",stdin);
freopen ("sumdiv.out","w",stdout);
scanf("%ld %ld",&a,&b);nr=a;
sq=sqrt(a);
for (i=2;i<=sq+1;i++)
if (nr%i==0){
while (nr%i==0){
c++;nr/=i;
}
c*=b;
factorizare(i,c);
c=0;
}
if(nr%(a/2)==0)factorizare(a/2,1);
if(p==1)factorizare(a,1);
printf("%ld",p);
return 0;
}
void factorizare(long nrp,long exp)
{
unsigned long long val=1,k=1;
unsigned long long s=1;
while(k<=exp)
{s+=nrp*val;val*=nrp;k++;}
p=(p*s)%9901;
}