Slovenia is about 73 times smaller than Alaska.

Alaska is approximately 1,481,348 sq km, while Slovenia is approximately 20,273 sq km, making Slovenia 1.37% the size of Alaska. Meanwhile, the population of Alaska is ~710,231 people (1.4 million more people live in Slovenia).
Tip: This to-scale comparison of Alaska vs. Slovenia uses the Mercator projection, which distorts the size of regions near the poles.