Micronesia is 33 times larger than Nauru.
Area: 702 km2 World Factbook
Population: 105,681 (July 2014) World Factbook
The Federated States of Micronesia is an independent sovereign island nation consisting of four states – from west to east, Yap, Chuuk, Pohnpei and Kosrae – that are spread across the Western Pacific Ocean. Wikipedia
Area: 21 km2 World Factbook
Population: 9,488 (July 2014) World Factbook
Nauru, officially the Republic of Nauru and formerly known as Pleasant Island, is an island country in Micronesia in the South Pacific. Its nearest neighbour is Banaba Island in Kiribati, 300 kilometres to the east. Wikipedia