‘Divisible by’ affects only the creation of variables, if the value for the precision is 0. In this case, you define for ‘Divisible by’ an integer value, which must be divisible by with the created variable. A value of 10 thus generates only integers that are divisible by 10. A value of 5 produces integers that are divisible by 5, etc. For a precision of 0, ‘Divisible by’ is a mandatory field and must contain a positive integer. The default value is 1 for any integers.