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Dec 9th, 2019
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  1. #include <iostream>
  2. #include<cmath>
  3. using namespace std;
  4. long long n,a,c,i,Max,x,s,b,pr,ul,j,z,d,r,y,k,S,pmax;
  5.  
  6. int main()
  7. {
  8. cin>>n;
  9. x=1;
  10. S=0;
  11. Max=1;
  12. pmax=1;
  13. for(d=2; d*d<=n; d++)
  14. {
  15. k=0;
  16. while(n%d==0)
  17. {
  18. k=k+1;
  19. n=n/d;
  20.  
  21. }
  22. if(k>pmax)
  23. {
  24. Max=d;
  25. pmax=k;
  26. }
  27. if(k==pmax)
  28. {
  29. if(d>Max)
  30. {
  31. Max=d;
  32. }
  33. }
  34.  
  35.  
  36. }
  37. if(pmax==1)
  38. {
  39. Max=n;
  40. }
  41. cout<<Max;
  42.  
  43. return 0;
  44. }
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