A:
Positive:
1 x 25182782313 x 1937137143 x 5856461109 x 2310347559 x 4504971417 x 1777194133 x 609314687 x 53729
Negative:
-1 x -251827823-13 x -19371371-43 x -5856461-109 x -2310347-559 x -450497-1417 x -177719-4133 x -60931-4687 x -53729
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 251,827,823, 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 | 251,827,823 | |
| -1 | -251,827,823 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 251,827,823.
Example:
1 x 251,827,823 = 251,827,823
and
-1 x -251,827,823 = 251,827,823
Notice both answers equal 251,827,823
With that explanation out of the way, let's continue. Next, we take the number 251,827,823 and divide it by 2:
251,827,823 ÷ 2 = 125,913,911.5
If the quotient is a whole number, then 2 and 125,913,911.5 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 | 251,827,823 | |
| -1 | -251,827,823 |
Now, we try dividing 251,827,823 by 3:
251,827,823 ÷ 3 = 83,942,607.6667
If the quotient is a whole number, then 3 and 83,942,607.6667 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 | 251,827,823 | |
| -1 | -251,827,823 |
Let's try dividing by 4:
251,827,823 ÷ 4 = 62,956,955.75
If the quotient is a whole number, then 4 and 62,956,955.75 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 | 251,827,823 | |
| -1 | 251,827,823 |
If you did it right, you will end up with this table:
| 1 | 13 | 43 | 109 | 559 | 1,417 | 4,133 | 4,687 | 53,729 | 60,931 | 177,719 | 450,497 | 2,310,347 | 5,856,461 | 19,371,371 | 251,827,823 |
| -1 | -13 | -43 | -109 | -559 | -1,417 | -4,133 | -4,687 | -53,729 | -60,931 | -177,719 | -450,497 | -2,310,347 | -5,856,461 | -19,371,371 | -251,827,823 |
Here are some more numbers to try:
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