Primitive part of n! (for n>=1): n! = Product_{d|n} a(d).

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =120a(5) =60a(6) =5040a(7) =1680a(8) =60480a(9) =15120a(10) =39916800a(11) =55440a(12) =6227020800a(13) =8648640a(14) =1816214400a(15) =518918400a(17) =147026880a(19) =55870214400a(23) =771008958720