A:
Positive:
1 x 1355778723 x 58946959 x 22979397 x 139771103 x 1316291357 x 99912231 x 60772369 x 5723
Negative:
-1 x -13557787-23 x -589469-59 x -229793-97 x -139771-103 x -131629-1357 x -9991-2231 x -6077-2369 x -5723
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 13,557,787, 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 | 13,557,787 | |
| -1 | -13,557,787 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,557,787.
Example:
1 x 13,557,787 = 13,557,787
and
-1 x -13,557,787 = 13,557,787
Notice both answers equal 13,557,787
With that explanation out of the way, let's continue. Next, we take the number 13,557,787 and divide it by 2:
13,557,787 ÷ 2 = 6,778,893.5
If the quotient is a whole number, then 2 and 6,778,893.5 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 | 13,557,787 | |
| -1 | -13,557,787 |
Now, we try dividing 13,557,787 by 3:
13,557,787 ÷ 3 = 4,519,262.3333
If the quotient is a whole number, then 3 and 4,519,262.3333 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 | 13,557,787 | |
| -1 | -13,557,787 |
Let's try dividing by 4:
13,557,787 ÷ 4 = 3,389,446.75
If the quotient is a whole number, then 4 and 3,389,446.75 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 | 13,557,787 | |
| -1 | 13,557,787 |
If you did it right, you will end up with this table:
| 1 | 23 | 59 | 97 | 103 | 1,357 | 2,231 | 2,369 | 5,723 | 6,077 | 9,991 | 131,629 | 139,771 | 229,793 | 589,469 | 13,557,787 |
| -1 | -23 | -59 | -97 | -103 | -1,357 | -2,231 | -2,369 | -5,723 | -6,077 | -9,991 | -131,629 | -139,771 | -229,793 | -589,469 | -13,557,787 |
Here are some more numbers to try:
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