A:
Positive:
1 x 2114033455 x 42280669263 x 803815373 x 566765431 x 4904951315 x 1607631865 x 1133532155 x 98099
Negative:
-1 x -211403345-5 x -42280669-263 x -803815-373 x -566765-431 x -490495-1315 x -160763-1865 x -113353-2155 x -98099
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 211,403,345, 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 | 211,403,345 | |
| -1 | -211,403,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 211,403,345.
Example:
1 x 211,403,345 = 211,403,345
and
-1 x -211,403,345 = 211,403,345
Notice both answers equal 211,403,345
With that explanation out of the way, let's continue. Next, we take the number 211,403,345 and divide it by 2:
211,403,345 ÷ 2 = 105,701,672.5
If the quotient is a whole number, then 2 and 105,701,672.5 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 | 211,403,345 | |
| -1 | -211,403,345 |
Now, we try dividing 211,403,345 by 3:
211,403,345 ÷ 3 = 70,467,781.6667
If the quotient is a whole number, then 3 and 70,467,781.6667 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 | 211,403,345 | |
| -1 | -211,403,345 |
Let's try dividing by 4:
211,403,345 ÷ 4 = 52,850,836.25
If the quotient is a whole number, then 4 and 52,850,836.25 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 | 211,403,345 | |
| -1 | 211,403,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 263 | 373 | 431 | 1,315 | 1,865 | 2,155 | 98,099 | 113,353 | 160,763 | 490,495 | 566,765 | 803,815 | 42,280,669 | 211,403,345 |
| -1 | -5 | -263 | -373 | -431 | -1,315 | -1,865 | -2,155 | -98,099 | -113,353 | -160,763 | -490,495 | -566,765 | -803,815 | -42,280,669 | -211,403,345 |
Here are some more numbers to try:
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