The square part of a positive integer 
is the largest square number
dividing 
.
For 
, 2, ..., the first few are 1, 1, 1,
4, 1, 1, 1, 4, 9, 1, 1, 4, ... (OEIS A008833).
Square Part
See also
Cubic Part, Square Number, Squarefree, Squarefree PartExplore with Wolfram|Alpha
References
Sloane, N. J. A. Sequence A008833 in "The On-Line Encyclopedia of Integer Sequences."Referenced on Wolfram|Alpha
Square PartCite this as:
Weisstein, Eric W. "Square Part." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/SquarePart.html