A:
Positive:
1 x 55130142111 x 5011831123 x 2396962779 x 6978499253 x 2179057869 x 6344091817 x 30341319987 x 27583
Negative:
-1 x -551301421-11 x -50118311-23 x -23969627-79 x -6978499-253 x -2179057-869 x -634409-1817 x -303413-19987 x -27583
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 551,301,421, 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 | 551,301,421 | |
| -1 | -551,301,421 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 551,301,421.
Example:
1 x 551,301,421 = 551,301,421
and
-1 x -551,301,421 = 551,301,421
Notice both answers equal 551,301,421
With that explanation out of the way, let's continue. Next, we take the number 551,301,421 and divide it by 2:
551,301,421 ÷ 2 = 275,650,710.5
If the quotient is a whole number, then 2 and 275,650,710.5 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 | 551,301,421 | |
| -1 | -551,301,421 |
Now, we try dividing 551,301,421 by 3:
551,301,421 ÷ 3 = 183,767,140.3333
If the quotient is a whole number, then 3 and 183,767,140.3333 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 | 551,301,421 | |
| -1 | -551,301,421 |
Let's try dividing by 4:
551,301,421 ÷ 4 = 137,825,355.25
If the quotient is a whole number, then 4 and 137,825,355.25 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 | 551,301,421 | |
| -1 | 551,301,421 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 79 | 253 | 869 | 1,817 | 19,987 | 27,583 | 303,413 | 634,409 | 2,179,057 | 6,978,499 | 23,969,627 | 50,118,311 | 551,301,421 |
| -1 | -11 | -23 | -79 | -253 | -869 | -1,817 | -19,987 | -27,583 | -303,413 | -634,409 | -2,179,057 | -6,978,499 | -23,969,627 | -50,118,311 | -551,301,421 |
Here are some more numbers to try:
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