Alaska is about 70,540 times bigger than Nauru.

Nauru is approximately 21 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 7,053,938% larger than Nauru. Meanwhile, the population of Nauru is ~9,811 people (700,420 more people live in Alaska).
Tip: This to-scale comparison of Nauru vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.