1,089 is divisible by these numbers: 1, 3, 9, 11, 33, 99, 121, 363, 1089.
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nine is one number because adding 1+0+8+9=18=1+8=9 which is a quick test method to see if a number is divisible by nine. Then 1089 / 9 = 121 Answer: 9 x 121 = 1089 Then also three would be used so 3 x 363 = 1089 also.
The factors are 1, 3, 9, 11, 33, 99, 121, 363, 1089. Pick two.
2 is not divisible by 19008. 19008 is divisible by 2.
2 is not divisible by 870. 870 is divisible by 2.
3 is not divisible by 126. 126 is divisible by 3.