A:
Positive:
1 x 194273177 x 277533113 x 149440941 x 47383791 x 213487127 x 152971287 x 67691533 x 36449889 x 218531651 x 117671681 x 115573731 x 5207
Negative:
-1 x -19427317-7 x -2775331-13 x -1494409-41 x -473837-91 x -213487-127 x -152971-287 x -67691-533 x -36449-889 x -21853-1651 x -11767-1681 x -11557-3731 x -5207
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 19,427,317, 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 | 19,427,317 | |
| -1 | -19,427,317 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,427,317.
Example:
1 x 19,427,317 = 19,427,317
and
-1 x -19,427,317 = 19,427,317
Notice both answers equal 19,427,317
With that explanation out of the way, let's continue. Next, we take the number 19,427,317 and divide it by 2:
19,427,317 ÷ 2 = 9,713,658.5
If the quotient is a whole number, then 2 and 9,713,658.5 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 | 19,427,317 | |
| -1 | -19,427,317 |
Now, we try dividing 19,427,317 by 3:
19,427,317 ÷ 3 = 6,475,772.3333
If the quotient is a whole number, then 3 and 6,475,772.3333 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 | 19,427,317 | |
| -1 | -19,427,317 |
Let's try dividing by 4:
19,427,317 ÷ 4 = 4,856,829.25
If the quotient is a whole number, then 4 and 4,856,829.25 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 | 19,427,317 | |
| -1 | 19,427,317 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 41 | 91 | 127 | 287 | 533 | 889 | 1,651 | 1,681 | 3,731 | 5,207 | 11,557 | 11,767 | 21,853 | 36,449 | 67,691 | 152,971 | 213,487 | 473,837 | 1,494,409 | 2,775,331 | 19,427,317 |
| -1 | -7 | -13 | -41 | -91 | -127 | -287 | -533 | -889 | -1,651 | -1,681 | -3,731 | -5,207 | -11,557 | -11,767 | -21,853 | -36,449 | -67,691 | -152,971 | -213,487 | -473,837 | -1,494,409 | -2,775,331 | -19,427,317 |
Here are some more numbers to try:
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