Fourth place at last weekend's Japanese Grand Prix left Button 63 points adrift of drivers' championship leader Fernando Alonso with a maximum of 125 available, leaving him with only a very slim chance of claiming a second world crown.
But in the constructors' standings, McLaren are second, 41 points behind Red Bull and still in with a real shot of securing a first team title since 1998.
Button said: "It's 41 points, which is not massive at all. We didn't have a great race (in Japan) and we only lost a couple of points, and we can claw that back in one race.
"That's the great thing, if both Lewis and I get a good result and those two don't. The constructors is definitely on and that's the big aim, I think.
"Winning races is always the main focus, but when I get out of the car at the end of the race and look at the points, that's the bit I really look at.
"Winning the drivers' championship is such a slim opportunity and if it happens, it happens, but I am not going to get too excited about it."
His team-mate Lewis Hamilton, still palpably embarrassed about his misguided Twitter attack on Button last week, retains a genuine chance of the title although he is 42 points adrift of Alonso.
Hamilton is confident he will be more competitive than in his run to fifth place in Japan, after his team discovered a suspension problem after the race.
He said: "I know my car very well, so it's very rare that I get it (set-up) wrong, and if I do it's only a little bit and I can still manage it.
"But this was the worst it has ever been set up, and I was really shocked that I had done that.
"I hoped it wasn't my fault, but fortunately the guys did a lot of analysis after the race and found our that we had a failure on part of the rear suspension, so that's comforting.
"There was just a part that helps the balance and when you set it up it should react in one way but it didn't do that.
"I'm happy that we found something, so it won't be a problem for this weekend."