A:
Positive:
1 x 130862055 x 261724111 x 118965555 x 237931229 x 571451039 x 125951145 x 114292519 x 5195
Negative:
-1 x -13086205-5 x -2617241-11 x -1189655-55 x -237931-229 x -57145-1039 x -12595-1145 x -11429-2519 x -5195
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 13,086,205, 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 | 13,086,205 | |
| -1 | -13,086,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,086,205.
Example:
1 x 13,086,205 = 13,086,205
and
-1 x -13,086,205 = 13,086,205
Notice both answers equal 13,086,205
With that explanation out of the way, let's continue. Next, we take the number 13,086,205 and divide it by 2:
13,086,205 ÷ 2 = 6,543,102.5
If the quotient is a whole number, then 2 and 6,543,102.5 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 | 13,086,205 | |
| -1 | -13,086,205 |
Now, we try dividing 13,086,205 by 3:
13,086,205 ÷ 3 = 4,362,068.3333
If the quotient is a whole number, then 3 and 4,362,068.3333 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 | 13,086,205 | |
| -1 | -13,086,205 |
Let's try dividing by 4:
13,086,205 ÷ 4 = 3,271,551.25
If the quotient is a whole number, then 4 and 3,271,551.25 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 | 13,086,205 | |
| -1 | 13,086,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 229 | 1,039 | 1,145 | 2,519 | 5,195 | 11,429 | 12,595 | 57,145 | 237,931 | 1,189,655 | 2,617,241 | 13,086,205 |
| -1 | -5 | -11 | -55 | -229 | -1,039 | -1,145 | -2,519 | -5,195 | -11,429 | -12,595 | -57,145 | -237,931 | -1,189,655 | -2,617,241 | -13,086,205 |
Here are some more numbers to try:
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