A:
Positive:
1 x 511641655 x 1023283313 x 393570565 x 787141311 x 1645151555 x 329032531 x 202154043 x 12655
Negative:
-1 x -51164165-5 x -10232833-13 x -3935705-65 x -787141-311 x -164515-1555 x -32903-2531 x -20215-4043 x -12655
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 51,164,165, 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 | 51,164,165 | |
| -1 | -51,164,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,164,165.
Example:
1 x 51,164,165 = 51,164,165
and
-1 x -51,164,165 = 51,164,165
Notice both answers equal 51,164,165
With that explanation out of the way, let's continue. Next, we take the number 51,164,165 and divide it by 2:
51,164,165 ÷ 2 = 25,582,082.5
If the quotient is a whole number, then 2 and 25,582,082.5 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 | 51,164,165 | |
| -1 | -51,164,165 |
Now, we try dividing 51,164,165 by 3:
51,164,165 ÷ 3 = 17,054,721.6667
If the quotient is a whole number, then 3 and 17,054,721.6667 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 | 51,164,165 | |
| -1 | -51,164,165 |
Let's try dividing by 4:
51,164,165 ÷ 4 = 12,791,041.25
If the quotient is a whole number, then 4 and 12,791,041.25 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 | 51,164,165 | |
| -1 | 51,164,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 311 | 1,555 | 2,531 | 4,043 | 12,655 | 20,215 | 32,903 | 164,515 | 787,141 | 3,935,705 | 10,232,833 | 51,164,165 |
| -1 | -5 | -13 | -65 | -311 | -1,555 | -2,531 | -4,043 | -12,655 | -20,215 | -32,903 | -164,515 | -787,141 | -3,935,705 | -10,232,833 | -51,164,165 |
Here are some more numbers to try:
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