lib/numb/deficient.rb in numb-0.21.0 vs lib/numb/deficient.rb in numb-0.63.0

@@ -10,10 +10,10 @@
   #     27.deficient? #=> true
   #     6.deficient?  #=> false
   #
   def deficient?
     return false unless self > 0
-    sum_of_divisors < (2 * self)
+    σ < (2 * self)
   end
 
   alias :defective? :deficient?
 end