A:
Positive:
1 x 158537477 x 226482113 x 121951983 x 19100991 x 174217581 x 272871079 x 146932099 x 7553
Negative:
-1 x -15853747-7 x -2264821-13 x -1219519-83 x -191009-91 x -174217-581 x -27287-1079 x -14693-2099 x -7553
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 15,853,747, 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 | 15,853,747 | |
| -1 | -15,853,747 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,853,747.
Example:
1 x 15,853,747 = 15,853,747
and
-1 x -15,853,747 = 15,853,747
Notice both answers equal 15,853,747
With that explanation out of the way, let's continue. Next, we take the number 15,853,747 and divide it by 2:
15,853,747 ÷ 2 = 7,926,873.5
If the quotient is a whole number, then 2 and 7,926,873.5 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 | 15,853,747 | |
| -1 | -15,853,747 |
Now, we try dividing 15,853,747 by 3:
15,853,747 ÷ 3 = 5,284,582.3333
If the quotient is a whole number, then 3 and 5,284,582.3333 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 | 15,853,747 | |
| -1 | -15,853,747 |
Let's try dividing by 4:
15,853,747 ÷ 4 = 3,963,436.75
If the quotient is a whole number, then 4 and 3,963,436.75 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 | 15,853,747 | |
| -1 | 15,853,747 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 83 | 91 | 581 | 1,079 | 2,099 | 7,553 | 14,693 | 27,287 | 174,217 | 191,009 | 1,219,519 | 2,264,821 | 15,853,747 |
| -1 | -7 | -13 | -83 | -91 | -581 | -1,079 | -2,099 | -7,553 | -14,693 | -27,287 | -174,217 | -191,009 | -1,219,519 | -2,264,821 | -15,853,747 |
Here are some more numbers to try:
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