Name the number  of weeks for san francisco 49ers
CREATE TABLE table_14984103_1 (week VARCHAR, opponent VARCHAR)
SELECT COUNT(week) FROM table_14984103_1 WHERE opponent = "San Francisco 49ers"
### Context: CREATE TABLE table_14984103_1 (week VARCHAR, opponent VARCHAR) ### Question: Name the number  of weeks for san francisco 49ers ### Answer: SELECT COUNT(week) FROM table_14984103_1 WHERE opponent = "San Francisco 49ers"