Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_42457 ( "Game" real, "Date" text, "Opponent" text, "Result" text, "Oilers points" real, "Opponents" real, "Oilers first downs" real, "Record" text, "Attendance" real )

### Question ###
Which Oilers points have an Opponent of san francisco 49ers, and Opponents larger than 19?

### Accurate SQL ###

SELECT MAX("Oilers points") FROM table_42457 WHERE "Opponent" = 'san francisco 49ers' AND "Opponents" > '19'