Fujitsu has a Digital Annealer with 8192 Qubits and a 1 million qubit system in the lab. This is a classical hardware emulation of quantum annealing (analog) system. This is not a quantum computer but hardware emulation.
David Worral, Head of Quantum Technologies at Cambridge Quantum Computing, indicated that Fujitsu has a 1 million qubit quantum annealing system in a lab at the University of Toronto.
Fujitsu has been a leader in creating lithography machines and supercomputers and FPGAs. Fujitsu chose to leverage this technology and their massive capabilities to develop quantum annealing far beyond the capabilities and scale of D-Wave Systems.