A:
Positive:
1 x 2115605597 x 3022293743 x 4920013101 x 2094659301 x 702859707 x 2992374343 x 487136959 x 30401
Negative:
-1 x -211560559-7 x -30222937-43 x -4920013-101 x -2094659-301 x -702859-707 x -299237-4343 x -48713-6959 x -30401
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 211,560,559, 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 | 211,560,559 | |
| -1 | -211,560,559 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,560,559.
Example:
1 x 211,560,559 = 211,560,559
and
-1 x -211,560,559 = 211,560,559
Notice both answers equal 211,560,559
With that explanation out of the way, let's continue. Next, we take the number 211,560,559 and divide it by 2:
211,560,559 ÷ 2 = 105,780,279.5
If the quotient is a whole number, then 2 and 105,780,279.5 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 | 211,560,559 | |
| -1 | -211,560,559 |
Now, we try dividing 211,560,559 by 3:
211,560,559 ÷ 3 = 70,520,186.3333
If the quotient is a whole number, then 3 and 70,520,186.3333 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 | 211,560,559 | |
| -1 | -211,560,559 |
Let's try dividing by 4:
211,560,559 ÷ 4 = 52,890,139.75
If the quotient is a whole number, then 4 and 52,890,139.75 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 | 211,560,559 | |
| -1 | 211,560,559 |
If you did it right, you will end up with this table:
| 1 | 7 | 43 | 101 | 301 | 707 | 4,343 | 6,959 | 30,401 | 48,713 | 299,237 | 702,859 | 2,094,659 | 4,920,013 | 30,222,937 | 211,560,559 |
| -1 | -7 | -43 | -101 | -301 | -707 | -4,343 | -6,959 | -30,401 | -48,713 | -299,237 | -702,859 | -2,094,659 | -4,920,013 | -30,222,937 | -211,560,559 |
Here are some more numbers to try:
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