Answer :

The greatest common factor is 4.
luana
[tex]Factors\ of\ 16:\\ 16:2\\ 8:2\\ 4:2\\ 2:2\\\\ Factors\ of\ 52:\\ 52:2\\ 26:2\\ 13:13\\\\ Factors\ of\ 76:\\ 76:2\\ 38:2\\ 19:19\\\\ Common \ factor\ is\ 2 and\ 4. [/tex]