A:
Positive:
1 x 136154055 x 272308167 x 20321597 x 140365335 x 40643419 x 32495485 x 280732095 x 6499
Negative:
-1 x -13615405-5 x -2723081-67 x -203215-97 x -140365-335 x -40643-419 x -32495-485 x -28073-2095 x -6499
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 13,615,405, 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 | 13,615,405 | |
| -1 | -13,615,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,615,405.
Example:
1 x 13,615,405 = 13,615,405
and
-1 x -13,615,405 = 13,615,405
Notice both answers equal 13,615,405
With that explanation out of the way, let's continue. Next, we take the number 13,615,405 and divide it by 2:
13,615,405 ÷ 2 = 6,807,702.5
If the quotient is a whole number, then 2 and 6,807,702.5 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 | 13,615,405 | |
| -1 | -13,615,405 |
Now, we try dividing 13,615,405 by 3:
13,615,405 ÷ 3 = 4,538,468.3333
If the quotient is a whole number, then 3 and 4,538,468.3333 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 | 13,615,405 | |
| -1 | -13,615,405 |
Let's try dividing by 4:
13,615,405 ÷ 4 = 3,403,851.25
If the quotient is a whole number, then 4 and 3,403,851.25 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 | 13,615,405 | |
| -1 | 13,615,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 67 | 97 | 335 | 419 | 485 | 2,095 | 6,499 | 28,073 | 32,495 | 40,643 | 140,365 | 203,215 | 2,723,081 | 13,615,405 |
| -1 | -5 | -67 | -97 | -335 | -419 | -485 | -2,095 | -6,499 | -28,073 | -32,495 | -40,643 | -140,365 | -203,215 | -2,723,081 | -13,615,405 |
Here are some more numbers to try:
Try the factor calculator