A:
Positive:
1 x 152232437 x 217474937 x 41143953 x 287231259 x 58777371 x 410331109 x 137271961 x 7763
Negative:
-1 x -15223243-7 x -2174749-37 x -411439-53 x -287231-259 x -58777-371 x -41033-1109 x -13727-1961 x -7763
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 15,223,243, 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 | 15,223,243 | |
| -1 | -15,223,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,223,243.
Example:
1 x 15,223,243 = 15,223,243
and
-1 x -15,223,243 = 15,223,243
Notice both answers equal 15,223,243
With that explanation out of the way, let's continue. Next, we take the number 15,223,243 and divide it by 2:
15,223,243 ÷ 2 = 7,611,621.5
If the quotient is a whole number, then 2 and 7,611,621.5 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 | 15,223,243 | |
| -1 | -15,223,243 |
Now, we try dividing 15,223,243 by 3:
15,223,243 ÷ 3 = 5,074,414.3333
If the quotient is a whole number, then 3 and 5,074,414.3333 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 | 15,223,243 | |
| -1 | -15,223,243 |
Let's try dividing by 4:
15,223,243 ÷ 4 = 3,805,810.75
If the quotient is a whole number, then 4 and 3,805,810.75 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 | 15,223,243 | |
| -1 | 15,223,243 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 53 | 259 | 371 | 1,109 | 1,961 | 7,763 | 13,727 | 41,033 | 58,777 | 287,231 | 411,439 | 2,174,749 | 15,223,243 |
| -1 | -7 | -37 | -53 | -259 | -371 | -1,109 | -1,961 | -7,763 | -13,727 | -41,033 | -58,777 | -287,231 | -411,439 | -2,174,749 | -15,223,243 |
Here are some more numbers to try:
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