
from math import sqrt






def  __SCREAMING_SNAKE_CASE				(  _SCREAMING_SNAKE_CASE				):
							_snake_case       =  0
							for i in range(1							, int(sqrt(_SCREAMING_SNAKE_CASE				) + 1				)				):
														if n % i == 0 and i != sqrt(_SCREAMING_SNAKE_CASE				):
																					total += i + n // i
														elif i == sqrt(_SCREAMING_SNAKE_CASE				):
																					total += i
							return total - n






def  __SCREAMING_SNAKE_CASE				(  _SCREAMING_SNAKE_CASE = 1_0000				):
							_snake_case       =  sum(
							    i
							    for i in range(1							, _SCREAMING_SNAKE_CASE				)
							    if sum_of_divisors(sum_of_divisors(_SCREAMING_SNAKE_CASE				)				) == i and sum_of_divisors(_SCREAMING_SNAKE_CASE				) != i				)
							return total


if __name__ == "__main__":
				print(solution(int(str(input()).strip())))

'''simple docstring'''
from urllib.parse import quote

import pytest

from datasets.utils.hub import hf_hub_url






@pytest.mark.parametrize("""repo_id"""							, ["""canonical_dataset_name""", """org-name/dataset-name"""]				)
@pytest.mark.parametrize("""path"""							, ["""filename.csv""", """filename with blanks.csv"""]				)
@pytest.mark.parametrize("""revision"""							, [None, """v2"""]				)
def  __SCREAMING_SNAKE_CASE				(  _SCREAMING_SNAKE_CASE							, _SCREAMING_SNAKE_CASE							, _SCREAMING_SNAKE_CASE				):
							_snake_case       =  hf_hub_url(repo_id=_SCREAMING_SNAKE_CASE							, path=_SCREAMING_SNAKE_CASE							, revision=_SCREAMING_SNAKE_CASE				)
							assert url == f"""https://huggingface.co/datasets/{repo_id}/resolve/{revision or "main"}/{quote(_SCREAMING_SNAKE_CASE				)}"""