A:
Positive:
1 x 26355132111 x 2395921141 x 6428081313 x 842017451 x 5843711867 x 1411633443 x 7654712833 x 20537
Negative:
-1 x -263551321-11 x -23959211-41 x -6428081-313 x -842017-451 x -584371-1867 x -141163-3443 x -76547-12833 x -20537
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 263,551,321, 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 | 263,551,321 | |
| -1 | -263,551,321 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 263,551,321.
Example:
1 x 263,551,321 = 263,551,321
and
-1 x -263,551,321 = 263,551,321
Notice both answers equal 263,551,321
With that explanation out of the way, let's continue. Next, we take the number 263,551,321 and divide it by 2:
263,551,321 ÷ 2 = 131,775,660.5
If the quotient is a whole number, then 2 and 131,775,660.5 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 | 263,551,321 | |
| -1 | -263,551,321 |
Now, we try dividing 263,551,321 by 3:
263,551,321 ÷ 3 = 87,850,440.3333
If the quotient is a whole number, then 3 and 87,850,440.3333 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 | 263,551,321 | |
| -1 | -263,551,321 |
Let's try dividing by 4:
263,551,321 ÷ 4 = 65,887,830.25
If the quotient is a whole number, then 4 and 65,887,830.25 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 | 263,551,321 | |
| -1 | 263,551,321 |
If you did it right, you will end up with this table:
| 1 | 11 | 41 | 313 | 451 | 1,867 | 3,443 | 12,833 | 20,537 | 76,547 | 141,163 | 584,371 | 842,017 | 6,428,081 | 23,959,211 | 263,551,321 |
| -1 | -11 | -41 | -313 | -451 | -1,867 | -3,443 | -12,833 | -20,537 | -76,547 | -141,163 | -584,371 | -842,017 | -6,428,081 | -23,959,211 | -263,551,321 |
Here are some more numbers to try:
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