v2016 x32-bit - http://dl.trimble.com/sketchup/2016/en/SketchUpPro-2016-1-1450-80430-en-x86.exe
v2016 x64-bit - http://dl.trimble.com/sketchup/2016/en/SketchUpPro-2016-1-1449-80430-en-x64.exe
v2017 x64-bit - http://dl.trimble.com/sketchup/SketchUpPro-en-x64.exe
License for v2016 (Valid till 1st July 2018)
Serial Number: RH-00243181-ALR
Authorization Code: bcb51c0870e85
License for v2017 (Valid till 1st July 2018)
Serial Number: SH-00243045-ALR
Authorization code: 0681f41b4dd85
Download the right software for your system and use the above license to activate your SketchUp v2016 and v2017. Remember you'll need to activate it online.
I know there're cracks available on the net but I prefer to use the safe way.
Tested with v2017 and it's working.