A:
Positive:
1 x 27852843711 x 2532076789 x 3129533293 x 950609971 x 286847979 x 2845033223 x 8641910681 x 26077
Negative:
-1 x -278528437-11 x -25320767-89 x -3129533-293 x -950609-971 x -286847-979 x -284503-3223 x -86419-10681 x -26077
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 278,528,437, 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 | 278,528,437 | |
| -1 | -278,528,437 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 278,528,437.
Example:
1 x 278,528,437 = 278,528,437
and
-1 x -278,528,437 = 278,528,437
Notice both answers equal 278,528,437
With that explanation out of the way, let's continue. Next, we take the number 278,528,437 and divide it by 2:
278,528,437 ÷ 2 = 139,264,218.5
If the quotient is a whole number, then 2 and 139,264,218.5 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 | 278,528,437 | |
| -1 | -278,528,437 |
Now, we try dividing 278,528,437 by 3:
278,528,437 ÷ 3 = 92,842,812.3333
If the quotient is a whole number, then 3 and 92,842,812.3333 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 | 278,528,437 | |
| -1 | -278,528,437 |
Let's try dividing by 4:
278,528,437 ÷ 4 = 69,632,109.25
If the quotient is a whole number, then 4 and 69,632,109.25 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 | 278,528,437 | |
| -1 | 278,528,437 |
If you did it right, you will end up with this table:
| 1 | 11 | 89 | 293 | 971 | 979 | 3,223 | 10,681 | 26,077 | 86,419 | 284,503 | 286,847 | 950,609 | 3,129,533 | 25,320,767 | 278,528,437 |
| -1 | -11 | -89 | -293 | -971 | -979 | -3,223 | -10,681 | -26,077 | -86,419 | -284,503 | -286,847 | -950,609 | -3,129,533 | -25,320,767 | -278,528,437 |
Here are some more numbers to try:
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