  The integrality of the Kontsevich integral and perturbative invariants is
discussed. We show that the denominator of the degree $n$ part of the
Kontsevich integral of any knot or link is a divisor of $(2!3!... n!)^4(n+1)!$.
We also show that the denominator of of the degree $n$ part of the universal
perturbative invariant of homology 3-spheres is not divisible by any prime
greater than $2n+1$.
