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Cod sursa(job #49247)
#include<stdio.h>
int main()
{long n,i,j,r,k=2,a,b,v[1000],u[100];
FILE*f=fopen("sumdiv.in","r");
FILE*g=fopen("sumdiv.out","w");
fscanf(f,"%ld %ld",&a,&b);
i=0;k=2;
while(a!=1)
{
r=0;
while(a%k==0) {r++;a=a/k;}
if(r!=0) {i++;v[i]=k;u[i]=r*b;}
k++;}
long s=1,pr;
for(j=1;j<=i;j++)
{pr=1;k=1;
while(k<=u[j]+1)
{pr*=v[j];
k++;}
s*=(((pr-1)/(v[j]-1))%9901);
}
fprintf(g,"%ld",s%9901);
fclose(f);
fclose(g);
return 0;}