A:
Positive:
1 x 172871055 x 345742111 x 157155555 x 314311257 x 672651223 x 141351285 x 134532827 x 6115
Negative:
-1 x -17287105-5 x -3457421-11 x -1571555-55 x -314311-257 x -67265-1223 x -14135-1285 x -13453-2827 x -6115
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 17,287,105, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 17,287,105 | |
| -1 | -17,287,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,287,105.
Example:
1 x 17,287,105 = 17,287,105
and
-1 x -17,287,105 = 17,287,105
Notice both answers equal 17,287,105
With that explanation out of the way, let's continue. Next, we take the number 17,287,105 and divide it by 2:
17,287,105 ÷ 2 = 8,643,552.5
If the quotient is a whole number, then 2 and 8,643,552.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 17,287,105 | |
| -1 | -17,287,105 |
Now, we try dividing 17,287,105 by 3:
17,287,105 ÷ 3 = 5,762,368.3333
If the quotient is a whole number, then 3 and 5,762,368.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 17,287,105 | |
| -1 | -17,287,105 |
Let's try dividing by 4:
17,287,105 ÷ 4 = 4,321,776.25
If the quotient is a whole number, then 4 and 4,321,776.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 17,287,105 | |
| -1 | 17,287,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 257 | 1,223 | 1,285 | 2,827 | 6,115 | 13,453 | 14,135 | 67,265 | 314,311 | 1,571,555 | 3,457,421 | 17,287,105 |
| -1 | -5 | -11 | -55 | -257 | -1,223 | -1,285 | -2,827 | -6,115 | -13,453 | -14,135 | -67,265 | -314,311 | -1,571,555 | -3,457,421 | -17,287,105 |
Here are some more numbers to try:
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