The fundamental voltage equation (steady state) is
V = Ke*w + R*I
At zero speed (stall), the Ke*w term goes away, so
I = V/R
and
T = Kt*V/R
This is presuming that the motor can handle all this current. I have generally found that motors rated for under, say, 48V can handle full voltage at zero speed. However, motors designed to run off rectified 120V or higher generally cannot. If you apply full bus voltage to one of these motors at rest for even a few milliseconds, you will likely end up with a nice door stop.