A:
Positive:
1 x 5138415711 x 467128737 x 1388761191 x 269027407 x 126251661 x 777372101 x 244577067 x 7271
Negative:
-1 x -51384157-11 x -4671287-37 x -1388761-191 x -269027-407 x -126251-661 x -77737-2101 x -24457-7067 x -7271
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 51,384,157, 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 | 51,384,157 | |
| -1 | -51,384,157 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,384,157.
Example:
1 x 51,384,157 = 51,384,157
and
-1 x -51,384,157 = 51,384,157
Notice both answers equal 51,384,157
With that explanation out of the way, let's continue. Next, we take the number 51,384,157 and divide it by 2:
51,384,157 ÷ 2 = 25,692,078.5
If the quotient is a whole number, then 2 and 25,692,078.5 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 | 51,384,157 | |
| -1 | -51,384,157 |
Now, we try dividing 51,384,157 by 3:
51,384,157 ÷ 3 = 17,128,052.3333
If the quotient is a whole number, then 3 and 17,128,052.3333 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 | 51,384,157 | |
| -1 | -51,384,157 |
Let's try dividing by 4:
51,384,157 ÷ 4 = 12,846,039.25
If the quotient is a whole number, then 4 and 12,846,039.25 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 | 51,384,157 | |
| -1 | 51,384,157 |
If you did it right, you will end up with this table:
| 1 | 11 | 37 | 191 | 407 | 661 | 2,101 | 7,067 | 7,271 | 24,457 | 77,737 | 126,251 | 269,027 | 1,388,761 | 4,671,287 | 51,384,157 |
| -1 | -11 | -37 | -191 | -407 | -661 | -2,101 | -7,067 | -7,271 | -24,457 | -77,737 | -126,251 | -269,027 | -1,388,761 | -4,671,287 | -51,384,157 |
Here are some more numbers to try:
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