How many times brighter is betelgeuse than aldebaran?

Betelgeuse is approximately 100,000 times brighter than Aldebaran. This significant difference in brightness is primarily due to Betelgeuse's status as a red supergiant star, which has a much higher luminosity compared to Aldebaran, a red giant star. Factors such as size and temperature contribute to this disparity in their brightness as seen from Earth.