Luxembourg is about 573 times smaller than Alaska.

Alaska is approximately 1,481,348 sq km, while Luxembourg is approximately 2,586 sq km, making Luxembourg 0.17% the size of Alaska. Meanwhile, the population of Alaska is ~710,231 people (59,867 fewer people live in Luxembourg).
Tip: This to-scale comparison of Alaska vs. Luxembourg uses the Mercator projection, which distorts the size of regions near the poles.