Table with many columns or many small tables?

I created a table where it has 30 columns.

CREATE TABLE "SETTINGS" (
  "column1" INTEGER PRIMARY KEY,
  ...
  ...
  "column30"
)

However, I can group them and create different table where they can have foreign keys to the primary table. Which is the best way to follow? Or the number of the columns is small so it's the same which way I will follow?