I think processors is the correct word at an AIX level, though one might also say CPU’s, cores, physical or virtual processors, depending on which server technology is being used.
You should be able to use…
lparstat|grep lcpu|awk '{print $6}' |
or run nmon with the ‘c’ option to see the processors in action…
or if you prefer sar…
sar -P ALL 1 1 |
