Linked from
The 40 pages that link to Prime factorization, each with the reason it gives.
Prime numberRelated: Factoring RSA moduli would reveal the secret structure behind their keys.
MultisetRelated: Prime factors form a multiset because a prime may appear repeatedly.
Lowest termsRelated: Shared prime factors reveal exactly which factors can be canceled.
Aliquot sequenceRelated: It provides an efficient route to the sum of all divisors.