A:
Positive:
1 x 511681455 x 102336297 x 730973535 x 1461947163 x 313915815 x 627831141 x 448455705 x 8969
Negative:
-1 x -51168145-5 x -10233629-7 x -7309735-35 x -1461947-163 x -313915-815 x -62783-1141 x -44845-5705 x -8969
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 51,168,145, 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 | 51,168,145 | |
| -1 | -51,168,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,168,145.
Example:
1 x 51,168,145 = 51,168,145
and
-1 x -51,168,145 = 51,168,145
Notice both answers equal 51,168,145
With that explanation out of the way, let's continue. Next, we take the number 51,168,145 and divide it by 2:
51,168,145 ÷ 2 = 25,584,072.5
If the quotient is a whole number, then 2 and 25,584,072.5 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 | 51,168,145 | |
| -1 | -51,168,145 |
Now, we try dividing 51,168,145 by 3:
51,168,145 ÷ 3 = 17,056,048.3333
If the quotient is a whole number, then 3 and 17,056,048.3333 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 | 51,168,145 | |
| -1 | -51,168,145 |
Let's try dividing by 4:
51,168,145 ÷ 4 = 12,792,036.25
If the quotient is a whole number, then 4 and 12,792,036.25 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 | 51,168,145 | |
| -1 | 51,168,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 163 | 815 | 1,141 | 5,705 | 8,969 | 44,845 | 62,783 | 313,915 | 1,461,947 | 7,309,735 | 10,233,629 | 51,168,145 |
| -1 | -5 | -7 | -35 | -163 | -815 | -1,141 | -5,705 | -8,969 | -44,845 | -62,783 | -313,915 | -1,461,947 | -7,309,735 | -10,233,629 | -51,168,145 |
Here are some more numbers to try:
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