Alaska is about 31,518 times bigger than Pitcairn Islands.

Pitcairn Islands is approximately 47 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 3,151,704% larger than Pitcairn Islands. Meanwhile, the population of Pitcairn Islands is ~50 people (710,181 more people live in Alaska).
Tip: This to-scale comparison of Pitcairn Islands vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.