code: def _factors(n: int) -> set[int]:
      """Return the factors of an integer
      https://stackoverflow.com/a/6800214/616616
      """
      seq = (
          [i, n // i]
          for i in range(1, int(pow(n, 0.5) + 1))
          if n % i == 0
      )
      return {j for item in seq for j in item}
  
imports: from __future__ import annotations
  import math
  from dask.system import CPU_COUNT
label_desc: Use image node_id 1 for calling a global function with example usage: _factors(n) and returns: unknown