A:
Positive:
1 x 1385874555 x 27717491167 x 829865269 x 515195617 x 224615835 x 1659731345 x 1030393085 x 44923
Negative:
-1 x -138587455-5 x -27717491-167 x -829865-269 x -515195-617 x -224615-835 x -165973-1345 x -103039-3085 x -44923
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 138,587,455, 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 | 138,587,455 | |
| -1 | -138,587,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 138,587,455.
Example:
1 x 138,587,455 = 138,587,455
and
-1 x -138,587,455 = 138,587,455
Notice both answers equal 138,587,455
With that explanation out of the way, let's continue. Next, we take the number 138,587,455 and divide it by 2:
138,587,455 ÷ 2 = 69,293,727.5
If the quotient is a whole number, then 2 and 69,293,727.5 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 | 138,587,455 | |
| -1 | -138,587,455 |
Now, we try dividing 138,587,455 by 3:
138,587,455 ÷ 3 = 46,195,818.3333
If the quotient is a whole number, then 3 and 46,195,818.3333 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 | 138,587,455 | |
| -1 | -138,587,455 |
Let's try dividing by 4:
138,587,455 ÷ 4 = 34,646,863.75
If the quotient is a whole number, then 4 and 34,646,863.75 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 | 138,587,455 | |
| -1 | 138,587,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 167 | 269 | 617 | 835 | 1,345 | 3,085 | 44,923 | 103,039 | 165,973 | 224,615 | 515,195 | 829,865 | 27,717,491 | 138,587,455 |
| -1 | -5 | -167 | -269 | -617 | -835 | -1,345 | -3,085 | -44,923 | -103,039 | -165,973 | -224,615 | -515,195 | -829,865 | -27,717,491 | -138,587,455 |
Here are some more numbers to try:
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