






def      a_ (      _A  )			->			int:







				"""simple docstring"""
				if not isinstance(_A      ,   _A  ):
								raise ValueError('Input must be an integer'  )
				if input_num <= 0:
								raise ValueError('Input must be positive'  )
				return sum(
				    divisor for divisor in range(1      ,   input_num // 2 + 1  ) if input_num % divisor == 0  )


if __name__ == "__main__":
							import doctest

							doctest.testmod()












from __future__ import annotations
def      a_ (      _A  )			->			bool:







				"""simple docstring"""
				return len(set(_A  )  ) == len(_A  )


if __name__ == "__main__":
							import doctest

							doctest.testmod()




