#include<stdio.h> #include<math.h> int he(int a){ int i,sum; for (sum=0,i=1;i<=a/2;i++) if(a%i==0) sum+=i; return sum; } int main(){ int i,n,m; scanf("%d%d",&m,&n); for(i=m;i<=n;i++) { if(i==he(he(i)) &&i<he(i)) printf("%d %d\n",i,he(i)); } return 0; } |
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