180
The Sun has no moons. Moons orbit Planets > Planets orbit the Sun.
27 moons orbit Uranus that we know of
The smallest moons are probably smaller than 1 kilometer in diameter. Possibilities include tiny moons that orbit the gas giants and/or the ice giants due to the fact that they have many moons and are less explored.
169 moons.
There are no known moons in orbit around Venus.
There are 180 moons in our solar system.
62 moons orbit Saturn, 67 orbit Jupiter, 5 orbit Pluto, 14 orbit Neptune, and 27 orbit Uranus.
Jupiter has 63 confirmed moons that are in a stable orbit around the planet. There could well be more than this though, which have yet to be discovered.
Only one. The Moon
None.
Mars itself is a planet. If you are asking how many moons it has, it has two moons that orbit it.
49 moons as of January 2009, 14 are still in consideration