[scripts] fix factors function in pycalc

scripts/pycalc_startup.py

@@ -5,10 +5,9 @@ from fractions import Fraction
 def factors(n):
     result = set()
     for i in range(1, int(sqrt(n)) + 1):
-        div, mod = divmod(n, i)
-        if mod == 0:
-            result.add(div)
-            result.add(mod)
+        if n % i == 0:
+            result.add(i)
+            result.add(n // i)
     return result