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