Compléter Math chap 4Version en ligne Divisibility, Prime, Composite, GCF, LCM par Miss Schulman 1 3x2x2x2x2 18 8 60 prime 3x3x2x2x2 50 composite 43 is a number . 72 is a number . The prime factorization of 36 is . The prime factorization of 48 is . The GCF of 72 and 80 is . The GCF of 36 and 18 is . The LCM of 10 and 50 is . The LCM of 20 and 30 is .