A:
Positive:
1 x 5165540913 x 397349329 x 1781221181 x 285389377 x 137017757 x 682372353 x 219535249 x 9841
Negative:
-1 x -51655409-13 x -3973493-29 x -1781221-181 x -285389-377 x -137017-757 x -68237-2353 x -21953-5249 x -9841
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 51,655,409, 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 | 51,655,409 | |
| -1 | -51,655,409 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,655,409.
Example:
1 x 51,655,409 = 51,655,409
and
-1 x -51,655,409 = 51,655,409
Notice both answers equal 51,655,409
With that explanation out of the way, let's continue. Next, we take the number 51,655,409 and divide it by 2:
51,655,409 ÷ 2 = 25,827,704.5
If the quotient is a whole number, then 2 and 25,827,704.5 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 | 51,655,409 | |
| -1 | -51,655,409 |
Now, we try dividing 51,655,409 by 3:
51,655,409 ÷ 3 = 17,218,469.6667
If the quotient is a whole number, then 3 and 17,218,469.6667 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 | 51,655,409 | |
| -1 | -51,655,409 |
Let's try dividing by 4:
51,655,409 ÷ 4 = 12,913,852.25
If the quotient is a whole number, then 4 and 12,913,852.25 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 | 51,655,409 | |
| -1 | 51,655,409 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 181 | 377 | 757 | 2,353 | 5,249 | 9,841 | 21,953 | 68,237 | 137,017 | 285,389 | 1,781,221 | 3,973,493 | 51,655,409 |
| -1 | -13 | -29 | -181 | -377 | -757 | -2,353 | -5,249 | -9,841 | -21,953 | -68,237 | -137,017 | -285,389 | -1,781,221 | -3,973,493 | -51,655,409 |
Here are some more numbers to try:
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