The figures you've measured, seem acceptable.
Just one question: why do you want to know the inductance of a mains cable? It's negligible at mains frequencies.
Mr. treez has been faffing about with EMC problems since, well, ever. It would be reasonable to expect that's the immediate concern.
A reminder that the mains cable has characteristic impedance, i.e., it simply transmits whatever energy is sent down it, into the mains LISN, to be read out as conducted EMI. That impedance isn't terribly different from the 50 ohms (per line) of the LISN, in fact the differential (L-N) impedance is then 100 ohms, very close to the cable indeed.
If you have concerns about conducted EMI, fix it inside the EUT. You can't fix it outside.
Tim