A:
Positive:
1 x 3957249719 x 208276373 x 542089103 x 384199277 x 1428611387 x 285311957 x 202215263 x 7519
Negative:
-1 x -39572497-19 x -2082763-73 x -542089-103 x -384199-277 x -142861-1387 x -28531-1957 x -20221-5263 x -7519
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 39,572,497, 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 | 39,572,497 | |
| -1 | -39,572,497 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 39,572,497.
Example:
1 x 39,572,497 = 39,572,497
and
-1 x -39,572,497 = 39,572,497
Notice both answers equal 39,572,497
With that explanation out of the way, let's continue. Next, we take the number 39,572,497 and divide it by 2:
39,572,497 ÷ 2 = 19,786,248.5
If the quotient is a whole number, then 2 and 19,786,248.5 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 | 39,572,497 | |
| -1 | -39,572,497 |
Now, we try dividing 39,572,497 by 3:
39,572,497 ÷ 3 = 13,190,832.3333
If the quotient is a whole number, then 3 and 13,190,832.3333 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 | 39,572,497 | |
| -1 | -39,572,497 |
Let's try dividing by 4:
39,572,497 ÷ 4 = 9,893,124.25
If the quotient is a whole number, then 4 and 9,893,124.25 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 | 39,572,497 | |
| -1 | 39,572,497 |
If you did it right, you will end up with this table:
| 1 | 19 | 73 | 103 | 277 | 1,387 | 1,957 | 5,263 | 7,519 | 20,221 | 28,531 | 142,861 | 384,199 | 542,089 | 2,082,763 | 39,572,497 |
| -1 | -19 | -73 | -103 | -277 | -1,387 | -1,957 | -5,263 | -7,519 | -20,221 | -28,531 | -142,861 | -384,199 | -542,089 | -2,082,763 | -39,572,497 |
Here are some more numbers to try:
Try the factor calculator