A:
Positive:
1 x 253506897 x 362152713 x 195005317 x 149121749 x 51736191 x 278579119 x 213031221 x 114709637 x 39797833 x 304331547 x 163872341 x 10829
Negative:
-1 x -25350689-7 x -3621527-13 x -1950053-17 x -1491217-49 x -517361-91 x -278579-119 x -213031-221 x -114709-637 x -39797-833 x -30433-1547 x -16387-2341 x -10829
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 25,350,689, 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 | 25,350,689 | |
| -1 | -25,350,689 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,350,689.
Example:
1 x 25,350,689 = 25,350,689
and
-1 x -25,350,689 = 25,350,689
Notice both answers equal 25,350,689
With that explanation out of the way, let's continue. Next, we take the number 25,350,689 and divide it by 2:
25,350,689 ÷ 2 = 12,675,344.5
If the quotient is a whole number, then 2 and 12,675,344.5 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 | 25,350,689 | |
| -1 | -25,350,689 |
Now, we try dividing 25,350,689 by 3:
25,350,689 ÷ 3 = 8,450,229.6667
If the quotient is a whole number, then 3 and 8,450,229.6667 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 | 25,350,689 | |
| -1 | -25,350,689 |
Let's try dividing by 4:
25,350,689 ÷ 4 = 6,337,672.25
If the quotient is a whole number, then 4 and 6,337,672.25 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 | 25,350,689 | |
| -1 | 25,350,689 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 17 | 49 | 91 | 119 | 221 | 637 | 833 | 1,547 | 2,341 | 10,829 | 16,387 | 30,433 | 39,797 | 114,709 | 213,031 | 278,579 | 517,361 | 1,491,217 | 1,950,053 | 3,621,527 | 25,350,689 |
| -1 | -7 | -13 | -17 | -49 | -91 | -119 | -221 | -637 | -833 | -1,547 | -2,341 | -10,829 | -16,387 | -30,433 | -39,797 | -114,709 | -213,031 | -278,579 | -517,361 | -1,491,217 | -1,950,053 | -3,621,527 | -25,350,689 |
Here are some more numbers to try:
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