A:
Positive:
1 x 2435066455 x 4870132953 x 459446583 x 2933815265 x 918893415 x 5867634399 x 5535511071 x 21995
Negative:
-1 x -243506645-5 x -48701329-53 x -4594465-83 x -2933815-265 x -918893-415 x -586763-4399 x -55355-11071 x -21995
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 243,506,645, 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 | 243,506,645 | |
| -1 | -243,506,645 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 243,506,645.
Example:
1 x 243,506,645 = 243,506,645
and
-1 x -243,506,645 = 243,506,645
Notice both answers equal 243,506,645
With that explanation out of the way, let's continue. Next, we take the number 243,506,645 and divide it by 2:
243,506,645 ÷ 2 = 121,753,322.5
If the quotient is a whole number, then 2 and 121,753,322.5 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 | 243,506,645 | |
| -1 | -243,506,645 |
Now, we try dividing 243,506,645 by 3:
243,506,645 ÷ 3 = 81,168,881.6667
If the quotient is a whole number, then 3 and 81,168,881.6667 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 | 243,506,645 | |
| -1 | -243,506,645 |
Let's try dividing by 4:
243,506,645 ÷ 4 = 60,876,661.25
If the quotient is a whole number, then 4 and 60,876,661.25 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 | 243,506,645 | |
| -1 | 243,506,645 |
If you did it right, you will end up with this table:
| 1 | 5 | 53 | 83 | 265 | 415 | 4,399 | 11,071 | 21,995 | 55,355 | 586,763 | 918,893 | 2,933,815 | 4,594,465 | 48,701,329 | 243,506,645 |
| -1 | -5 | -53 | -83 | -265 | -415 | -4,399 | -11,071 | -21,995 | -55,355 | -586,763 | -918,893 | -2,933,815 | -4,594,465 | -48,701,329 | -243,506,645 |
Here are some more numbers to try:
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