In Sthanak Pratikraman (Samvatsari Pratikraman) the customary loga count is 40. This is the amount of Logassa Sutra recited during the Samvatsari Pratikraman in the Svetambar tradition, often equated with reciting a large number of Navkar Mantras as part of atonement. Some texts describe other specific logga counts for different occasions (e.g., 12 for Pakkhi and 20 for Chaumasi), but the widely practiced Samvatsari form uses 40 logas. You can read more here