Bell had career bests of six 3-pointers and 20 points, and Pangos had 12 points on four 3s for the Bulldogs (24-5). Freshman Ryan Spangler had his first double-double with career highs of 12 points and 10 rebounds.
Longwood (10-20), which had only had seven players, was led by Antwan Carter’s 18 points and Tristan Carey’s 16.
It was the final home appearance for seniors Rob Sacre, who will leave the Gonzaga program second in career blocked shots, and Marquise Carter, who was the West Coast Conference tournament MVP last year.
Sacre had five points and six rebounds in limited minutes. Carter had 10 points and five assists, with his acrobatic three-point play pushing the Bulldogs past their previous season high of 90 points.