The positive integer factors of 945 are:
1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945
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3 x 3 x 3 x 5 x 7 = 945
105
The prime factors are 2x2x2x13 All factors are 1,104,2,52,4,26,8,13
the answer is ........ factors are 1,2,3,6,9,18 ; 1x18,2x9,3x6 prime factors are 2x3x3
1,2,4,5,10,20,25,50,100 9 factors in total.