arcanum symbols are among the 22 picture cards of the tarot, called the major arcana.
The 22 cards of the Major Arcana symbolize the internal and external human condition.
You might divide them up into groups such as the Major Arcana and the Minor Arcana.
The Major Arcana consists of 22 cards and the Lesser Arcana cards are a total of 56.
Of the 22 Major Arcana cards, only 21 are numbered in Roman numerals I through XXI.