Sources tell The Verge that the vast majority of the film's sales came through YouTube and Google Play Movies. The film was also available on Xbox Video and a dedicated Sony website, and as of this afternoon, Apple's iTunes Store. The figures reported by Sony today only include sales through Saturday, so the final weekend count will be a bit larger.
In a statement, the studio notes that in the four days since its release, the film already "ranks as Sony Pictures #1 online film of all time." It's not clear how this ranking is being made, though certainly no other major Sony film has been released simultaneously online and in theaters.