Bynum finished with 14 points and 19 rebounds.
Bryant Sunday criticized Lakers' management for its handling of trade rumors involving teammate Pau Gasol, shook off the trade speculation and finished with 16 points and 12 rebounds for Los Angeles, which won for the fourth time in five games.
The Lakers built their lead to as many as 30 points in the first half, with Steve Blake scoring 14 of his 17 points early in the contest.
Nicolas Batum and LaMarcus Aldridge each tallied 18 points for Portland, which fell for the fourth time in six games.
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