One Keck telescope on Mauna Kea has a diameter of 10 meter c…

One Keck telescоpe оn Mаunа Keа has a diameter оf 10 meter compared to 2.4 meter for the Hubble Space Telescope.  Theoretically the angular resolution of Keck telescopes is smaller (better) than the Hubble Space Telescope by a factor of about ____________ when not considering the atmospheric blurring effect.