June 2018 Update

Task/Arithmetic-Rational/Sidef/arithmetic-rational.sidef

@@ -0,0 +1,13 @@
+for n in (1 .. 2**19) {
+    var frac = 0
+
+    n.divisors.each {|d|
+        frac += 1/d
+    }
+
+    if (frac.is_int) {
+        say "Sum of reciprocal divisors of #{n} = #{frac} exactly #{
+            frac == 2 ? '- perfect!' : ''
+        }"
+    }
+}