
'''simple docstring'''
from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_flax_available,
    is_tf_available,
    is_torch_available,
)


__lowerCAmelCase												=	{
    'configuration_vision_encoder_decoder': ['VisionEncoderDecoderConfig', 'VisionEncoderDecoderOnnxConfig']
}

try:
				if not is_torch_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				__lowerCAmelCase												=	['VisionEncoderDecoderModel']

try:
				if not is_tf_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				__lowerCAmelCase												=	['TFVisionEncoderDecoderModel']

try:
				if not is_flax_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				__lowerCAmelCase												=	['FlaxVisionEncoderDecoderModel']

if TYPE_CHECKING:
				from .configuration_vision_encoder_decoder import VisionEncoderDecoderConfig, VisionEncoderDecoderOnnxConfig

				try:
								if not is_torch_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_vision_encoder_decoder import VisionEncoderDecoderModel

				try:
								if not is_tf_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_tf_vision_encoder_decoder import TFVisionEncoderDecoderModel

				try:
								if not is_flax_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_flax_vision_encoder_decoder import FlaxVisionEncoderDecoderModel

else:
				import sys

				__lowerCAmelCase												=	_LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)

'''simple docstring'''
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())))