A:
Positive:
1 x 2537254855 x 5074509713 x 1951734565 x 390346979 x 3211715395 x 6423431027 x 2470555135 x 49411
Negative:
-1 x -253725485-5 x -50745097-13 x -19517345-65 x -3903469-79 x -3211715-395 x -642343-1027 x -247055-5135 x -49411
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 253,725,485, 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 | 253,725,485 | |
| -1 | -253,725,485 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 253,725,485.
Example:
1 x 253,725,485 = 253,725,485
and
-1 x -253,725,485 = 253,725,485
Notice both answers equal 253,725,485
With that explanation out of the way, let's continue. Next, we take the number 253,725,485 and divide it by 2:
253,725,485 ÷ 2 = 126,862,742.5
If the quotient is a whole number, then 2 and 126,862,742.5 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 | 253,725,485 | |
| -1 | -253,725,485 |
Now, we try dividing 253,725,485 by 3:
253,725,485 ÷ 3 = 84,575,161.6667
If the quotient is a whole number, then 3 and 84,575,161.6667 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 | 253,725,485 | |
| -1 | -253,725,485 |
Let's try dividing by 4:
253,725,485 ÷ 4 = 63,431,371.25
If the quotient is a whole number, then 4 and 63,431,371.25 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 | 253,725,485 | |
| -1 | 253,725,485 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 79 | 395 | 1,027 | 5,135 | 49,411 | 247,055 | 642,343 | 3,211,715 | 3,903,469 | 19,517,345 | 50,745,097 | 253,725,485 |
| -1 | -5 | -13 | -65 | -79 | -395 | -1,027 | -5,135 | -49,411 | -247,055 | -642,343 | -3,211,715 | -3,903,469 | -19,517,345 | -50,745,097 | -253,725,485 |
Here are some more numbers to try:
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