gistfile1.bat

@echo off
:: test of "sequence number file"
setlocal enabledelayedexpansion 

set prefix=C:\path\to\hoge.
set extension=.bk
set pad=2

for /l %%i in (1, 1, 15) do (
	set num=00000%%i
	set file_path=%prefix%!num:~-%pad%!%extension%
	echo !file_path!
)

pause