The Collaborative International Dictionary of English v.0.48:

Submultiple \Sub*mul"ti*ple\, n. (Math.)
   A number or quality which is contained in another an exact
   number of times, or is an aliquot part of it; thus, 7 is the
   submultiple of 56, being contained in it eight times.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Submultiple \Sub*mul"ti*ple\, a. (Math.)
   Of or pertaining to a submultiple; being a submultiple; as, a
   submultiple number; submultiple ratio.
   [1913 Webster]