The D-Wave machine is not a general quantum computer.
For example, the quantum computer that factored 21 into 3 x 7 did it by using Shor's algorithm for quantum factoring in polynomial time. The D-Wave machine cannot implement Shor's algorithm.
The D-Wave machine would be more capable on a different problem, one that maps efficiently onto the D-Wave machine's problem space. But we're talking about factoring here.
