数 is a simplified Chinese hanzi, listed here under the keyword “number”. It is built from 娄 (surname) and 攵 (rap). It appears as a component in 2 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “surname” + “rap”. 数 is among the results, together with every other character containing the same shapes.
Open 数 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.