A:
Positive:
1 x 2825064723 x 122828937 x 76353189 x 317423373 x 75739851 x 331972047 x 138013293 x 8579
Negative:
-1 x -28250647-23 x -1228289-37 x -763531-89 x -317423-373 x -75739-851 x -33197-2047 x -13801-3293 x -8579
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 28,250,647, 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 | 28,250,647 | |
| -1 | -28,250,647 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,250,647.
Example:
1 x 28,250,647 = 28,250,647
and
-1 x -28,250,647 = 28,250,647
Notice both answers equal 28,250,647
With that explanation out of the way, let's continue. Next, we take the number 28,250,647 and divide it by 2:
28,250,647 ÷ 2 = 14,125,323.5
If the quotient is a whole number, then 2 and 14,125,323.5 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 | 28,250,647 | |
| -1 | -28,250,647 |
Now, we try dividing 28,250,647 by 3:
28,250,647 ÷ 3 = 9,416,882.3333
If the quotient is a whole number, then 3 and 9,416,882.3333 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 | 28,250,647 | |
| -1 | -28,250,647 |
Let's try dividing by 4:
28,250,647 ÷ 4 = 7,062,661.75
If the quotient is a whole number, then 4 and 7,062,661.75 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 | 28,250,647 | |
| -1 | 28,250,647 |
If you did it right, you will end up with this table:
| 1 | 23 | 37 | 89 | 373 | 851 | 2,047 | 3,293 | 8,579 | 13,801 | 33,197 | 75,739 | 317,423 | 763,531 | 1,228,289 | 28,250,647 |
| -1 | -23 | -37 | -89 | -373 | -851 | -2,047 | -3,293 | -8,579 | -13,801 | -33,197 | -75,739 | -317,423 | -763,531 | -1,228,289 | -28,250,647 |
Here are some more numbers to try:
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