A:
Positive:
1 x 280577297 x 400824737 x 758317127 x 220927259 x 108331853 x 32893889 x 315614699 x 5971
Negative:
-1 x -28057729-7 x -4008247-37 x -758317-127 x -220927-259 x -108331-853 x -32893-889 x -31561-4699 x -5971
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 28,057,729, 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 | 28,057,729 | |
| -1 | -28,057,729 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,057,729.
Example:
1 x 28,057,729 = 28,057,729
and
-1 x -28,057,729 = 28,057,729
Notice both answers equal 28,057,729
With that explanation out of the way, let's continue. Next, we take the number 28,057,729 and divide it by 2:
28,057,729 ÷ 2 = 14,028,864.5
If the quotient is a whole number, then 2 and 14,028,864.5 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 | 28,057,729 | |
| -1 | -28,057,729 |
Now, we try dividing 28,057,729 by 3:
28,057,729 ÷ 3 = 9,352,576.3333
If the quotient is a whole number, then 3 and 9,352,576.3333 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 | 28,057,729 | |
| -1 | -28,057,729 |
Let's try dividing by 4:
28,057,729 ÷ 4 = 7,014,432.25
If the quotient is a whole number, then 4 and 7,014,432.25 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 | 28,057,729 | |
| -1 | 28,057,729 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 127 | 259 | 853 | 889 | 4,699 | 5,971 | 31,561 | 32,893 | 108,331 | 220,927 | 758,317 | 4,008,247 | 28,057,729 |
| -1 | -7 | -37 | -127 | -259 | -853 | -889 | -4,699 | -5,971 | -31,561 | -32,893 | -108,331 | -220,927 | -758,317 | -4,008,247 | -28,057,729 |
Here are some more numbers to try:
Try the factor calculator