A:
Positive:
1 x 2510402237 x 3586288967 x 374686983 x 3024581469 x 535267581 x 4320835561 x 451436449 x 38927
Negative:
-1 x -251040223-7 x -35862889-67 x -3746869-83 x -3024581-469 x -535267-581 x -432083-5561 x -45143-6449 x -38927
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 251,040,223, 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 | 251,040,223 | |
| -1 | -251,040,223 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 251,040,223.
Example:
1 x 251,040,223 = 251,040,223
and
-1 x -251,040,223 = 251,040,223
Notice both answers equal 251,040,223
With that explanation out of the way, let's continue. Next, we take the number 251,040,223 and divide it by 2:
251,040,223 ÷ 2 = 125,520,111.5
If the quotient is a whole number, then 2 and 125,520,111.5 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 | 251,040,223 | |
| -1 | -251,040,223 |
Now, we try dividing 251,040,223 by 3:
251,040,223 ÷ 3 = 83,680,074.3333
If the quotient is a whole number, then 3 and 83,680,074.3333 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 | 251,040,223 | |
| -1 | -251,040,223 |
Let's try dividing by 4:
251,040,223 ÷ 4 = 62,760,055.75
If the quotient is a whole number, then 4 and 62,760,055.75 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 | 251,040,223 | |
| -1 | 251,040,223 |
If you did it right, you will end up with this table:
| 1 | 7 | 67 | 83 | 469 | 581 | 5,561 | 6,449 | 38,927 | 45,143 | 432,083 | 535,267 | 3,024,581 | 3,746,869 | 35,862,889 | 251,040,223 |
| -1 | -7 | -67 | -83 | -469 | -581 | -5,561 | -6,449 | -38,927 | -45,143 | -432,083 | -535,267 | -3,024,581 | -3,746,869 | -35,862,889 | -251,040,223 |
Here are some more numbers to try:
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