diff --git a/ahaha.rb b/ahaha.rb
new file mode 100644
index 0000000..58e50ae
--- /dev/null
+++ b/ahaha.rb
@@ -0,0 +1,20 @@
+# 対象の数
+target_number = 8678321
+
+# 素因数分解する関数
+def factorize(num)
+  i = 2
+  factors = []
+  while i <= num
+    if (num % i).zero?
+      factors << i
+      num /= i
+    else
+      i += 1
+    end
+  end
+  factors
+end
+
+print "#{target_number} の素因数分解: "
+puts factorize(target_number).join(' ')
\ No newline at end of file
diff --git a/huhuhu.c b/huhuhu.c
new file mode 100644
index 0000000..ff65ad0
--- /dev/null
+++ b/huhuhu.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main() {
+	int x=5;
+	printf("%dを2で割ると%.1fになる", x, (float)x/2);
+}