A:
Positive:
1 x 154003577 x 220005149 x 31429359 x 261023343 x 44899413 x 37289761 x 202372891 x 5327
Negative:
-1 x -15400357-7 x -2200051-49 x -314293-59 x -261023-343 x -44899-413 x -37289-761 x -20237-2891 x -5327
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 15,400,357, 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 | 15,400,357 | |
| -1 | -15,400,357 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,400,357.
Example:
1 x 15,400,357 = 15,400,357
and
-1 x -15,400,357 = 15,400,357
Notice both answers equal 15,400,357
With that explanation out of the way, let's continue. Next, we take the number 15,400,357 and divide it by 2:
15,400,357 ÷ 2 = 7,700,178.5
If the quotient is a whole number, then 2 and 7,700,178.5 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 | 15,400,357 | |
| -1 | -15,400,357 |
Now, we try dividing 15,400,357 by 3:
15,400,357 ÷ 3 = 5,133,452.3333
If the quotient is a whole number, then 3 and 5,133,452.3333 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 | 15,400,357 | |
| -1 | -15,400,357 |
Let's try dividing by 4:
15,400,357 ÷ 4 = 3,850,089.25
If the quotient is a whole number, then 4 and 3,850,089.25 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 | 15,400,357 | |
| -1 | 15,400,357 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 59 | 343 | 413 | 761 | 2,891 | 5,327 | 20,237 | 37,289 | 44,899 | 261,023 | 314,293 | 2,200,051 | 15,400,357 |
| -1 | -7 | -49 | -59 | -343 | -413 | -761 | -2,891 | -5,327 | -20,237 | -37,289 | -44,899 | -261,023 | -314,293 | -2,200,051 | -15,400,357 |
Here are some more numbers to try:
Try the factor calculator