Data update

Task/Arithmetic-numbers/Sidef/arithmetic-numbers.sidef

@@ -0,0 +1,14 @@
+func is_arithmetic(n) {
+    n.tau `divides` n.sigma
+}
+
+say "The first one hundred arithmetic numbers:"
+100.by(is_arithmetic).each_slice(10, {|*a|
+    a.map { '%3s' % _ }.join(' ').say
+})
+
+for x in (1e3, 1e4, 1e5, 1e6) {
+    var arr = x.by(is_arithmetic)
+    say "\n#{x}th arithmetic number is #{arr.last}."
+    say "There are #{arr.count{.is_composite}} composite arithmetic numbers <= #{arr.last}."
+}