31 is a Prime number and has no factors other than 1 and itself. The factors of 49 are 1, 7, and 49.
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3149/1000
0
Oh, what a happy little question! When we round 3149 to the nearest thousand, we get 3000. Now, if we add this to itself, we get a sum of 6000. Just imagine all those zeros lining up like little trees in a peaceful forest.
Factors of 90 will be factors of 180.
factors: 1, 449prime factors: 449