A:
Positive:
1 x 24303841913 x 1869526331 x 7839949283 x 858793403 x 6030732131 x 1140493679 x 660618773 x 27703
Negative:
-1 x -243038419-13 x -18695263-31 x -7839949-283 x -858793-403 x -603073-2131 x -114049-3679 x -66061-8773 x -27703
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 243,038,419, 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 | 243,038,419 | |
| -1 | -243,038,419 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,038,419.
Example:
1 x 243,038,419 = 243,038,419
and
-1 x -243,038,419 = 243,038,419
Notice both answers equal 243,038,419
With that explanation out of the way, let's continue. Next, we take the number 243,038,419 and divide it by 2:
243,038,419 ÷ 2 = 121,519,209.5
If the quotient is a whole number, then 2 and 121,519,209.5 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 | 243,038,419 | |
| -1 | -243,038,419 |
Now, we try dividing 243,038,419 by 3:
243,038,419 ÷ 3 = 81,012,806.3333
If the quotient is a whole number, then 3 and 81,012,806.3333 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 | 243,038,419 | |
| -1 | -243,038,419 |
Let's try dividing by 4:
243,038,419 ÷ 4 = 60,759,604.75
If the quotient is a whole number, then 4 and 60,759,604.75 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 | 243,038,419 | |
| -1 | 243,038,419 |
If you did it right, you will end up with this table:
| 1 | 13 | 31 | 283 | 403 | 2,131 | 3,679 | 8,773 | 27,703 | 66,061 | 114,049 | 603,073 | 858,793 | 7,839,949 | 18,695,263 | 243,038,419 |
| -1 | -13 | -31 | -283 | -403 | -2,131 | -3,679 | -8,773 | -27,703 | -66,061 | -114,049 | -603,073 | -858,793 | -7,839,949 | -18,695,263 | -243,038,419 |
Here are some more numbers to try:
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