What team has had the most 20 HR hitters in one season in MLB history?

There were three times that a team had three players who each hit at least 40 home runs. The Braves did it once, the Rockies did it twice:

# 1973 Atlanta Braves: Hank Aaron, Darrell Evans, and Davey Johnson. # 1996 Colorado Rockies:Andres Galarraga 47, Ellis Burks 40, Vinny Castilla 40 # 1997 Colorado Rockies: Larry Walker 49, Andres Galarraga 41, Vinny Castilla 40