A:
Positive:
1 x 137421055 x 274842113 x 105708553 x 25928565 x 211417265 x 51857689 x 199453445 x 3989
Negative:
-1 x -13742105-5 x -2748421-13 x -1057085-53 x -259285-65 x -211417-265 x -51857-689 x -19945-3445 x -3989
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 13,742,105, 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 | 13,742,105 | |
| -1 | -13,742,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,742,105.
Example:
1 x 13,742,105 = 13,742,105
and
-1 x -13,742,105 = 13,742,105
Notice both answers equal 13,742,105
With that explanation out of the way, let's continue. Next, we take the number 13,742,105 and divide it by 2:
13,742,105 ÷ 2 = 6,871,052.5
If the quotient is a whole number, then 2 and 6,871,052.5 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 | 13,742,105 | |
| -1 | -13,742,105 |
Now, we try dividing 13,742,105 by 3:
13,742,105 ÷ 3 = 4,580,701.6667
If the quotient is a whole number, then 3 and 4,580,701.6667 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 | 13,742,105 | |
| -1 | -13,742,105 |
Let's try dividing by 4:
13,742,105 ÷ 4 = 3,435,526.25
If the quotient is a whole number, then 4 and 3,435,526.25 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 | 13,742,105 | |
| -1 | 13,742,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 53 | 65 | 265 | 689 | 3,445 | 3,989 | 19,945 | 51,857 | 211,417 | 259,285 | 1,057,085 | 2,748,421 | 13,742,105 |
| -1 | -5 | -13 | -53 | -65 | -265 | -689 | -3,445 | -3,989 | -19,945 | -51,857 | -211,417 | -259,285 | -1,057,085 | -2,748,421 | -13,742,105 |
Here are some more numbers to try:
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