A:
Positive:
1 x 2563601055 x 51272021251 x 1021355359 x 714095569 x 4505451255 x 2042711795 x 1428192845 x 90109
Negative:
-1 x -256360105-5 x -51272021-251 x -1021355-359 x -714095-569 x -450545-1255 x -204271-1795 x -142819-2845 x -90109
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 256,360,105, 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 | 256,360,105 | |
| -1 | -256,360,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 256,360,105.
Example:
1 x 256,360,105 = 256,360,105
and
-1 x -256,360,105 = 256,360,105
Notice both answers equal 256,360,105
With that explanation out of the way, let's continue. Next, we take the number 256,360,105 and divide it by 2:
256,360,105 ÷ 2 = 128,180,052.5
If the quotient is a whole number, then 2 and 128,180,052.5 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 | 256,360,105 | |
| -1 | -256,360,105 |
Now, we try dividing 256,360,105 by 3:
256,360,105 ÷ 3 = 85,453,368.3333
If the quotient is a whole number, then 3 and 85,453,368.3333 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 | 256,360,105 | |
| -1 | -256,360,105 |
Let's try dividing by 4:
256,360,105 ÷ 4 = 64,090,026.25
If the quotient is a whole number, then 4 and 64,090,026.25 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 | 256,360,105 | |
| -1 | 256,360,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 251 | 359 | 569 | 1,255 | 1,795 | 2,845 | 90,109 | 142,819 | 204,271 | 450,545 | 714,095 | 1,021,355 | 51,272,021 | 256,360,105 |
| -1 | -5 | -251 | -359 | -569 | -1,255 | -1,795 | -2,845 | -90,109 | -142,819 | -204,271 | -450,545 | -714,095 | -1,021,355 | -51,272,021 | -256,360,105 |
Here are some more numbers to try:
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