∆¢
Characters: ∆, ¢
∆
¢
Get the Carmichael function of a number / Local Maxima
num
carmichael(a)
str
local_maxima(a)
⟨3|8|12|78|234|786|1234⟩ ∆¢
⟨2|2|2|12|12|130|616⟩