A:
Positive:
1 x 2072715555 x 4145431129 x 7147295145 x 1429459239 x 8672451195 x 1734495981 x 346556931 x 29905
Negative:
-1 x -207271555-5 x -41454311-29 x -7147295-145 x -1429459-239 x -867245-1195 x -173449-5981 x -34655-6931 x -29905
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 207,271,555, 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 | 207,271,555 | |
| -1 | -207,271,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 207,271,555.
Example:
1 x 207,271,555 = 207,271,555
and
-1 x -207,271,555 = 207,271,555
Notice both answers equal 207,271,555
With that explanation out of the way, let's continue. Next, we take the number 207,271,555 and divide it by 2:
207,271,555 ÷ 2 = 103,635,777.5
If the quotient is a whole number, then 2 and 103,635,777.5 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 | 207,271,555 | |
| -1 | -207,271,555 |
Now, we try dividing 207,271,555 by 3:
207,271,555 ÷ 3 = 69,090,518.3333
If the quotient is a whole number, then 3 and 69,090,518.3333 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 | 207,271,555 | |
| -1 | -207,271,555 |
Let's try dividing by 4:
207,271,555 ÷ 4 = 51,817,888.75
If the quotient is a whole number, then 4 and 51,817,888.75 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 | 207,271,555 | |
| -1 | 207,271,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 145 | 239 | 1,195 | 5,981 | 6,931 | 29,905 | 34,655 | 173,449 | 867,245 | 1,429,459 | 7,147,295 | 41,454,311 | 207,271,555 |
| -1 | -5 | -29 | -145 | -239 | -1,195 | -5,981 | -6,931 | -29,905 | -34,655 | -173,449 | -867,245 | -1,429,459 | -7,147,295 | -41,454,311 | -207,271,555 |
Here are some more numbers to try:
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