A:
Positive:
1 x 2452156455 x 4904312967 x 3659935107 x 2291735335 x 731987535 x 4583476841 x 358457169 x 34205
Negative:
-1 x -245215645-5 x -49043129-67 x -3659935-107 x -2291735-335 x -731987-535 x -458347-6841 x -35845-7169 x -34205
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 245,215,645, 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 | 245,215,645 | |
| -1 | -245,215,645 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 245,215,645.
Example:
1 x 245,215,645 = 245,215,645
and
-1 x -245,215,645 = 245,215,645
Notice both answers equal 245,215,645
With that explanation out of the way, let's continue. Next, we take the number 245,215,645 and divide it by 2:
245,215,645 ÷ 2 = 122,607,822.5
If the quotient is a whole number, then 2 and 122,607,822.5 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 | 245,215,645 | |
| -1 | -245,215,645 |
Now, we try dividing 245,215,645 by 3:
245,215,645 ÷ 3 = 81,738,548.3333
If the quotient is a whole number, then 3 and 81,738,548.3333 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 | 245,215,645 | |
| -1 | -245,215,645 |
Let's try dividing by 4:
245,215,645 ÷ 4 = 61,303,911.25
If the quotient is a whole number, then 4 and 61,303,911.25 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 | 245,215,645 | |
| -1 | 245,215,645 |
If you did it right, you will end up with this table:
| 1 | 5 | 67 | 107 | 335 | 535 | 6,841 | 7,169 | 34,205 | 35,845 | 458,347 | 731,987 | 2,291,735 | 3,659,935 | 49,043,129 | 245,215,645 |
| -1 | -5 | -67 | -107 | -335 | -535 | -6,841 | -7,169 | -34,205 | -35,845 | -458,347 | -731,987 | -2,291,735 | -3,659,935 | -49,043,129 | -245,215,645 |
Here are some more numbers to try:
Try the factor calculator