A:
Positive:
1 x 154395297 x 2205647113 x 136633131 x 117859149 x 103621791 x 19519917 x 168371043 x 14803
Negative:
-1 x -15439529-7 x -2205647-113 x -136633-131 x -117859-149 x -103621-791 x -19519-917 x -16837-1043 x -14803
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 15,439,529, 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 | 15,439,529 | |
| -1 | -15,439,529 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,439,529.
Example:
1 x 15,439,529 = 15,439,529
and
-1 x -15,439,529 = 15,439,529
Notice both answers equal 15,439,529
With that explanation out of the way, let's continue. Next, we take the number 15,439,529 and divide it by 2:
15,439,529 ÷ 2 = 7,719,764.5
If the quotient is a whole number, then 2 and 7,719,764.5 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 | 15,439,529 | |
| -1 | -15,439,529 |
Now, we try dividing 15,439,529 by 3:
15,439,529 ÷ 3 = 5,146,509.6667
If the quotient is a whole number, then 3 and 5,146,509.6667 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 | 15,439,529 | |
| -1 | -15,439,529 |
Let's try dividing by 4:
15,439,529 ÷ 4 = 3,859,882.25
If the quotient is a whole number, then 4 and 3,859,882.25 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 | 15,439,529 | |
| -1 | 15,439,529 |
If you did it right, you will end up with this table:
| 1 | 7 | 113 | 131 | 149 | 791 | 917 | 1,043 | 14,803 | 16,837 | 19,519 | 103,621 | 117,859 | 136,633 | 2,205,647 | 15,439,529 |
| -1 | -7 | -113 | -131 | -149 | -791 | -917 | -1,043 | -14,803 | -16,837 | -19,519 | -103,621 | -117,859 | -136,633 | -2,205,647 | -15,439,529 |
Here are some more numbers to try:
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