The Buffaloes remain unbeaten in four meetings with Northern Arizona (4-6), a member of the Big Sky conference which dropped to 0-3 against Pac-12 teams this season. The Lumberjacks were beaten by Oregon and Arizona earlier this season.
DeWayne Russell had 15 points and Max Jacobsen 10 to lead the Lumberjacks, whose 47-point loss represented their largest margin of defeat this season. The previous high was a 43-point loss to Arizona.
Colorado was breezing by the break, taking a 57-21 lead while piling up a season high in points for a half.
Maryland point guard Melo Trimble, considered a lock to leave the program before struggling in the second half last season, has withdrawn from the NBA draft and will return for his junior season.
Louisville's Chinanu Onuaku, who recently underwent a medical procedure to correct a heart rhythm issue detected during the combine, will keep his name in the NBA draft pool.
Andrew White III will return to the Nebraska men's basketball team next season after removing his name from the NBA draft.