A:
Positive:
1 x 135379797 x 193399713 x 104138331 x 43670991 x 148769217 x 62387403 x 335932821 x 4799
Negative:
-1 x -13537979-7 x -1933997-13 x -1041383-31 x -436709-91 x -148769-217 x -62387-403 x -33593-2821 x -4799
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 13,537,979, 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 | 13,537,979 | |
| -1 | -13,537,979 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,537,979.
Example:
1 x 13,537,979 = 13,537,979
and
-1 x -13,537,979 = 13,537,979
Notice both answers equal 13,537,979
With that explanation out of the way, let's continue. Next, we take the number 13,537,979 and divide it by 2:
13,537,979 ÷ 2 = 6,768,989.5
If the quotient is a whole number, then 2 and 6,768,989.5 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 | 13,537,979 | |
| -1 | -13,537,979 |
Now, we try dividing 13,537,979 by 3:
13,537,979 ÷ 3 = 4,512,659.6667
If the quotient is a whole number, then 3 and 4,512,659.6667 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 | 13,537,979 | |
| -1 | -13,537,979 |
Let's try dividing by 4:
13,537,979 ÷ 4 = 3,384,494.75
If the quotient is a whole number, then 4 and 3,384,494.75 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 | 13,537,979 | |
| -1 | 13,537,979 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 31 | 91 | 217 | 403 | 2,821 | 4,799 | 33,593 | 62,387 | 148,769 | 436,709 | 1,041,383 | 1,933,997 | 13,537,979 |
| -1 | -7 | -13 | -31 | -91 | -217 | -403 | -2,821 | -4,799 | -33,593 | -62,387 | -148,769 | -436,709 | -1,041,383 | -1,933,997 | -13,537,979 |
Here are some more numbers to try:
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