The Titans (13-6, 6-2 Big West Conference) have won three straight games.
Akognon scored four 3-pointers. Robinson made 8 of 13 baskets, including four baskets early in the second half, that gave the Titans a 69-55 lead with 12:35 remaining.
Donavan Morris led the 49'ers (4-15, 1-6) with 31 points, while Maurice Clady added 13.
Long Beach State erased a seven point deficit in the first half and then went on a 23-9 run to take a 31-24 lead with 6:30 left on a 3-pointer by Morris.
Cal state Fullerton battled back and took a 49-43 lead at the break.