On ARM32, the core engine is approximately 3.4 MB
(compressed), the framework + app code is approximately
765 KB (compressed), the LICENSE file is 58 KB
(compressed), and necessary Java code (classes.dex)
is 120 KB (compressed).

In ARM64, the core engine is approximately 4.0 MB 
(compressed), the framework + app code is approximately
659 KB (compressed), the LICENSE file is 58 KB
(compressed), and necessary Java code (classes.dex)
is 120 KB (compressed).

These numbers were measured using apkanalyzer,
which is also built into Android Studio.