A:
Positive:
1 x 161912597 x 231303717 x 952427119 x 136061359 x 45101379 x 427212513 x 64432653 x 6103
Negative:
-1 x -16191259-7 x -2313037-17 x -952427-119 x -136061-359 x -45101-379 x -42721-2513 x -6443-2653 x -6103
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 16,191,259, 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 | 16,191,259 | |
| -1 | -16,191,259 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,191,259.
Example:
1 x 16,191,259 = 16,191,259
and
-1 x -16,191,259 = 16,191,259
Notice both answers equal 16,191,259
With that explanation out of the way, let's continue. Next, we take the number 16,191,259 and divide it by 2:
16,191,259 ÷ 2 = 8,095,629.5
If the quotient is a whole number, then 2 and 8,095,629.5 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 | 16,191,259 | |
| -1 | -16,191,259 |
Now, we try dividing 16,191,259 by 3:
16,191,259 ÷ 3 = 5,397,086.3333
If the quotient is a whole number, then 3 and 5,397,086.3333 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 | 16,191,259 | |
| -1 | -16,191,259 |
Let's try dividing by 4:
16,191,259 ÷ 4 = 4,047,814.75
If the quotient is a whole number, then 4 and 4,047,814.75 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 | 16,191,259 | |
| -1 | 16,191,259 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 359 | 379 | 2,513 | 2,653 | 6,103 | 6,443 | 42,721 | 45,101 | 136,061 | 952,427 | 2,313,037 | 16,191,259 |
| -1 | -7 | -17 | -119 | -359 | -379 | -2,513 | -2,653 | -6,103 | -6,443 | -42,721 | -45,101 | -136,061 | -952,427 | -2,313,037 | -16,191,259 |
Here are some more numbers to try:
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