いく- いく.つ いく.ら 
[] dangerhow manyhow muchhow farhow long
いく (n,pref) (1) some, several, (2) many, (3) how many?, how much?
いくつ (adv) (1) (uk) how many?, (2) how old?
いくら (adv,n) how much?, how many?
きか (n) geometry
きかがく (n) geometry
いくど (adv,n) (how) many times, (how) often
いくにち (n) how many days?, what day (of month)?
いくぶん (adv,n) (1) somewhat, to some extent, to some degree, (n) (2) some, part, portion

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字