A:
Positive:
1 x 510157455 x 1020314911 x 463779555 x 927559239 x 2134551195 x 426912629 x 194053881 x 13145
Negative:
-1 x -51015745-5 x -10203149-11 x -4637795-55 x -927559-239 x -213455-1195 x -42691-2629 x -19405-3881 x -13145
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 51,015,745, 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 | 51,015,745 | |
| -1 | -51,015,745 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,015,745.
Example:
1 x 51,015,745 = 51,015,745
and
-1 x -51,015,745 = 51,015,745
Notice both answers equal 51,015,745
With that explanation out of the way, let's continue. Next, we take the number 51,015,745 and divide it by 2:
51,015,745 ÷ 2 = 25,507,872.5
If the quotient is a whole number, then 2 and 25,507,872.5 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 | 51,015,745 | |
| -1 | -51,015,745 |
Now, we try dividing 51,015,745 by 3:
51,015,745 ÷ 3 = 17,005,248.3333
If the quotient is a whole number, then 3 and 17,005,248.3333 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 | 51,015,745 | |
| -1 | -51,015,745 |
Let's try dividing by 4:
51,015,745 ÷ 4 = 12,753,936.25
If the quotient is a whole number, then 4 and 12,753,936.25 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 | 51,015,745 | |
| -1 | 51,015,745 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 239 | 1,195 | 2,629 | 3,881 | 13,145 | 19,405 | 42,691 | 213,455 | 927,559 | 4,637,795 | 10,203,149 | 51,015,745 |
| -1 | -5 | -11 | -55 | -239 | -1,195 | -2,629 | -3,881 | -13,145 | -19,405 | -42,691 | -213,455 | -927,559 | -4,637,795 | -10,203,149 | -51,015,745 |
Here are some more numbers to try:
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