A:
Positive:
1 x 195133617 x 278762319 x 102701923 x 848407133 x 146717161 x 121201437 x 446533059 x 6379
Negative:
-1 x -19513361-7 x -2787623-19 x -1027019-23 x -848407-133 x -146717-161 x -121201-437 x -44653-3059 x -6379
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 19,513,361, 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 | 19,513,361 | |
| -1 | -19,513,361 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,513,361.
Example:
1 x 19,513,361 = 19,513,361
and
-1 x -19,513,361 = 19,513,361
Notice both answers equal 19,513,361
With that explanation out of the way, let's continue. Next, we take the number 19,513,361 and divide it by 2:
19,513,361 ÷ 2 = 9,756,680.5
If the quotient is a whole number, then 2 and 9,756,680.5 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 | 19,513,361 | |
| -1 | -19,513,361 |
Now, we try dividing 19,513,361 by 3:
19,513,361 ÷ 3 = 6,504,453.6667
If the quotient is a whole number, then 3 and 6,504,453.6667 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 | 19,513,361 | |
| -1 | -19,513,361 |
Let's try dividing by 4:
19,513,361 ÷ 4 = 4,878,340.25
If the quotient is a whole number, then 4 and 4,878,340.25 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 | 19,513,361 | |
| -1 | 19,513,361 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 23 | 133 | 161 | 437 | 3,059 | 6,379 | 44,653 | 121,201 | 146,717 | 848,407 | 1,027,019 | 2,787,623 | 19,513,361 |
| -1 | -7 | -19 | -23 | -133 | -161 | -437 | -3,059 | -6,379 | -44,653 | -121,201 | -146,717 | -848,407 | -1,027,019 | -2,787,623 | -19,513,361 |
Here are some more numbers to try:
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