438/2 = 219
438/3 = 146
438/4 = 109.5
438/6 = 73
so 2 and 3 and 6 are and 4 is not.
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The factors of 2 are:1, 2The factors of 4 are:1, 2, 4The factors of 32 are:1, 2, 4, 8, 16, 32The common factors are:1, 2
Numbers without factors are PRIME Numbers. Taking the first ten numbers. 1,2,3,4,5,6,7,8,9,10. The prime numbers are 2,3,5,7, they have no factors. 4,6,8,9,10. Are not prime numbers as they have factors. 4 has a factor of '2' 6 has factors of '2 & 3'. 8 has factors of' 2 & 4'. or' 2,2,2.' 9 has factors of '3,3', 10 has factors of '2 5.' '1' is unique
Square numbers have odd numbers of factors.
1, 2, 3, 4, 6, 8, 12, 24 Pick two.
Four has three factors: 1, 2 and 4