Samizdata - 1:43 am on Jan 24, 2013 (gmt 0)
These figures only need to be rough
You could filter out those with "bot" in the string as suggested.
Then subtract an estimated percentage that seems likely (think "shrinkage").
how many visitors have hit each page
The percentage for the home page should be significantly higher as many bots go no further.
Whatever you do will be a guesstimate unless you spend a lot of time on it.