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  1. local read, write = io.read, io.write
  2. local b=2
  3. local n, sum
  4. n = 1
  5. while n <= 100 do
  6. sum = 0
  7. b = 2
  8. while b*b <= n do
  9. if n%b == 0 then
  10. sum = sum + b
  11. if b*b == n then
  12. else
  13. sum = sum + (n/b)
  14. end
  15. end
  16. b = b+1
  17. end
  18.  
  19. if sum == n then write("yes")
  20. else write("no")
  21. end
  22. n = n + 1
  23. end
Success #stdin #stdout 0.02s 2540KB
stdin
stdout
nononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononono