A:
Positive:
1 x 2122453555 x 424490717 x 3032076535 x 6064153139 x 1526945695 x 305389973 x 2181354865 x 43627
Negative:
-1 x -212245355-5 x -42449071-7 x -30320765-35 x -6064153-139 x -1526945-695 x -305389-973 x -218135-4865 x -43627
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 212,245,355, 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 | 212,245,355 | |
| -1 | -212,245,355 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 212,245,355.
Example:
1 x 212,245,355 = 212,245,355
and
-1 x -212,245,355 = 212,245,355
Notice both answers equal 212,245,355
With that explanation out of the way, let's continue. Next, we take the number 212,245,355 and divide it by 2:
212,245,355 ÷ 2 = 106,122,677.5
If the quotient is a whole number, then 2 and 106,122,677.5 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 | 212,245,355 | |
| -1 | -212,245,355 |
Now, we try dividing 212,245,355 by 3:
212,245,355 ÷ 3 = 70,748,451.6667
If the quotient is a whole number, then 3 and 70,748,451.6667 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 | 212,245,355 | |
| -1 | -212,245,355 |
Let's try dividing by 4:
212,245,355 ÷ 4 = 53,061,338.75
If the quotient is a whole number, then 4 and 53,061,338.75 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 | 212,245,355 | |
| -1 | 212,245,355 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 139 | 695 | 973 | 4,865 | 43,627 | 218,135 | 305,389 | 1,526,945 | 6,064,153 | 30,320,765 | 42,449,071 | 212,245,355 |
| -1 | -5 | -7 | -35 | -139 | -695 | -973 | -4,865 | -43,627 | -218,135 | -305,389 | -1,526,945 | -6,064,153 | -30,320,765 | -42,449,071 | -212,245,355 |
Here are some more numbers to try:
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