A:
Positive:
1 x 130403355 x 26080677 x 186290511 x 118548535 x 37258155 x 23709777 x 169355385 x 33871
Negative:
-1 x -13040335-5 x -2608067-7 x -1862905-11 x -1185485-35 x -372581-55 x -237097-77 x -169355-385 x -33871
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 13,040,335, 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 | 13,040,335 | |
| -1 | -13,040,335 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,040,335.
Example:
1 x 13,040,335 = 13,040,335
and
-1 x -13,040,335 = 13,040,335
Notice both answers equal 13,040,335
With that explanation out of the way, let's continue. Next, we take the number 13,040,335 and divide it by 2:
13,040,335 ÷ 2 = 6,520,167.5
If the quotient is a whole number, then 2 and 6,520,167.5 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 | 13,040,335 | |
| -1 | -13,040,335 |
Now, we try dividing 13,040,335 by 3:
13,040,335 ÷ 3 = 4,346,778.3333
If the quotient is a whole number, then 3 and 4,346,778.3333 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 | 13,040,335 | |
| -1 | -13,040,335 |
Let's try dividing by 4:
13,040,335 ÷ 4 = 3,260,083.75
If the quotient is a whole number, then 4 and 3,260,083.75 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 | 13,040,335 | |
| -1 | 13,040,335 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 33,871 | 169,355 | 237,097 | 372,581 | 1,185,485 | 1,862,905 | 2,608,067 | 13,040,335 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -33,871 | -169,355 | -237,097 | -372,581 | -1,185,485 | -1,862,905 | -2,608,067 | -13,040,335 |
Here are some more numbers to try:
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