Sierra Leone is 153 times larger than Andorra.
Area: 468 km2 World Factbook
Population: 85,458 (July 2014) World Factbook
Andorra, officially the Principality of Andorra, also called the Principality of the Valleys of Andorra, is a landlocked microstate in Southwestern Europe, located in the eastern Pyrenees mountains and bordered by Spain and France. Wikipedia
Area: 71,740 km2 World Factbook
Population: 5,743,725 (July 2014) World Factbook
Sierra Leone, officially the Republic of Sierra Leone, is a country in West Africa that is bordered by Guinea to the northeast, Liberia to the southeast, and the Atlantic Ocean to the southwest. Sierra Leone is a constitutional republic with a directly elected president and a unicameral legislature. Wikipedia