スウ, ス, サク, ソク, シュ, かず, かぞ.える, しばしば, せ.める, わずらわ.しい, じゅ

number, strength, fate, law, figures

JLPT3 G2 S13 F148

As per # (continuum) + action indicator → enumerate people or a continuum of objects → *count*; *number*.

[Full Kanji Etymology List]