How you can express an even number which is divided by all primes less than the square root of its half.i.e. : If e is the e even and has as divisors a,b,c,d....z (are all the primes less than sqrt(e/2)=> abcd.. z divides e.so it has as a factor the product of all primes<sqrt(e/2).

Is it possible to write these even numbers in one form?

what about if we want the even e to be divisible a from all odds less than sqrt(e/2).Is it easier to define it explicitly?