A:
Positive:
1 x 2566775477 x 3666822137 x 6937231259 x 991033683 x 3758091451 x 1768974781 x 5368710157 x 25271
Negative:
-1 x -256677547-7 x -36668221-37 x -6937231-259 x -991033-683 x -375809-1451 x -176897-4781 x -53687-10157 x -25271
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 256,677,547, 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 | 256,677,547 | |
| -1 | -256,677,547 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 256,677,547.
Example:
1 x 256,677,547 = 256,677,547
and
-1 x -256,677,547 = 256,677,547
Notice both answers equal 256,677,547
With that explanation out of the way, let's continue. Next, we take the number 256,677,547 and divide it by 2:
256,677,547 ÷ 2 = 128,338,773.5
If the quotient is a whole number, then 2 and 128,338,773.5 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 | 256,677,547 | |
| -1 | -256,677,547 |
Now, we try dividing 256,677,547 by 3:
256,677,547 ÷ 3 = 85,559,182.3333
If the quotient is a whole number, then 3 and 85,559,182.3333 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 | 256,677,547 | |
| -1 | -256,677,547 |
Let's try dividing by 4:
256,677,547 ÷ 4 = 64,169,386.75
If the quotient is a whole number, then 4 and 64,169,386.75 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 | 256,677,547 | |
| -1 | 256,677,547 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 259 | 683 | 1,451 | 4,781 | 10,157 | 25,271 | 53,687 | 176,897 | 375,809 | 991,033 | 6,937,231 | 36,668,221 | 256,677,547 |
| -1 | -7 | -37 | -259 | -683 | -1,451 | -4,781 | -10,157 | -25,271 | -53,687 | -176,897 | -375,809 | -991,033 | -6,937,231 | -36,668,221 | -256,677,547 |
Here are some more numbers to try:
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