A:
Positive:
1 x 1954965111 x 177724119 x 102892989 x 219659209 x 93539979 x 199691051 x 186011691 x 11561
Negative:
-1 x -19549651-11 x -1777241-19 x -1028929-89 x -219659-209 x -93539-979 x -19969-1051 x -18601-1691 x -11561
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 19,549,651, 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 | 19,549,651 | |
| -1 | -19,549,651 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,549,651.
Example:
1 x 19,549,651 = 19,549,651
and
-1 x -19,549,651 = 19,549,651
Notice both answers equal 19,549,651
With that explanation out of the way, let's continue. Next, we take the number 19,549,651 and divide it by 2:
19,549,651 ÷ 2 = 9,774,825.5
If the quotient is a whole number, then 2 and 9,774,825.5 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 | 19,549,651 | |
| -1 | -19,549,651 |
Now, we try dividing 19,549,651 by 3:
19,549,651 ÷ 3 = 6,516,550.3333
If the quotient is a whole number, then 3 and 6,516,550.3333 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 | 19,549,651 | |
| -1 | -19,549,651 |
Let's try dividing by 4:
19,549,651 ÷ 4 = 4,887,412.75
If the quotient is a whole number, then 4 and 4,887,412.75 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 | 19,549,651 | |
| -1 | 19,549,651 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 89 | 209 | 979 | 1,051 | 1,691 | 11,561 | 18,601 | 19,969 | 93,539 | 219,659 | 1,028,929 | 1,777,241 | 19,549,651 |
| -1 | -11 | -19 | -89 | -209 | -979 | -1,051 | -1,691 | -11,561 | -18,601 | -19,969 | -93,539 | -219,659 | -1,028,929 | -1,777,241 | -19,549,651 |
Here are some more numbers to try:
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