Manning went into the showdown two TDs shy of Brett Favre's record of 508, and threw four touchdown passes to reach 510.
"It's special because of the way our team played," said Manning, who surpassed Favre's mark with an 8-yard strike to Demaryius Thomas late in the second quarter.
As he went to retrieve the ball, his teammates had some fun.
"Those guys are all great athletes and my vertical leap isn't what it used to be. I haven't played keep-away since I was 8 years old," Manning said. "That is something I will always remember."
The Broncos had actually talked about doing something like that but Manning said he was surprised his teammates went through with it.
He shouldn't have been, Demaryius Thomas said, revealing that Manning actually had them practice it Friday.
"It's easy. You did that when you were kids," Thomas said. "It's like keep the ball away from the guy in the middle."
Manning said he just didn't think they'd go through with it.
"I'm a little bit hurt by it, the fact they're kind of picking on me," Manning feigned. "I've lost my vertical leap. It's not there anymore. My side-to-side agility is not quite as quick. So, it hurt me."
Then again, Manning said he deserved to get picked on "based on my non-graceful play when I tripped on the play before. So, it is probably fitting. That was pretty funny. I'll remember a lot of things about tonight, but I'll definitely remember that part of it and the fact they had the guts to go ahead and go through with it."
Manning finally got the ball along with congratulations from his teammates and coaches. The souvenir won't end up on Manning's mantle, however -- the Pro Football Hall of Fame has a nice spot all ready for it.
"I want to say congratulations for breaking the touchdown record," Favre said. "I'm not surprised. You've been a wonderful player and I've enjoyed watching you play. I've enjoyed competing against you. I wish you great success for the rest of the season and the rest of your career."
Manning completed 22 of 26 passes for 318 yards with no interceptions to go with his four TD throws before taking the fourth quarter off.
"I'm not sure what their coaches do," 49ers safety Eric Reid said. "They probably don't have to do much. When he's out there on the field, he recognizes the defense and makes audibles, he does it all. You're playing against a coordinator when he's out there. He's definitely one of the best, if not the best, ever."
Demaryius Thomas caught eight of Manning's throws for 171 yards, giving him an eye-popping 27 catches for 521 yards receiving and five TDs over the last three games.
Manning threw a 3-yard TD pass to Sanders on Denver's first drive and tied the record when Welker took a pass over the middle for 39 yards. Sanders' score was his first in Denver, and he became the 47th player to catch a TD pass from Manning.
Manning reached the milestone in his 246th regular-season game. Favre needed 302.
"I think Brett has always known he is one of my favorite players. He played the position with so much passion, so much toughness and great production as a quarterback," Manning said.
Among those offering their congratulations on the scoreboard was Fran Tarkenton, who said, "Well, Peyton, it's official. Your ducks have crossed the end zone more than anybody else's. But really, congratulations. Nobody has ever played the quarterback position better than you have."
Copyright 2014 by The Associated Press