2 x 2 x 3 x 7 = 84.
http://wiki.answers.com/Q/What_are_the_prime_facto...

2 * 2 * 3 * 7 = 84. More? We LOVE to answer. Thanks for using ChaCha.
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The factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. Text again soon for all your math needs!
http://www.kgbanswers.com/whataretheprimefacto...

None of the above. 1 is NOT considered prime. The correct answer is 2x2x3x7. Source(s) http://primes.utm.edu/notes/faq/one.html.
http://answers.yahoo.com/question/index?qid=201204...
