A:
Positive:
1 x 6156439913 x 473572323 x 2676713109 x 564811299 x 2059011417 x 434471889 x 325912507 x 24557
Negative:
-1 x -61564399-13 x -4735723-23 x -2676713-109 x -564811-299 x -205901-1417 x -43447-1889 x -32591-2507 x -24557
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 61,564,399, 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 | 61,564,399 | |
| -1 | -61,564,399 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,564,399.
Example:
1 x 61,564,399 = 61,564,399
and
-1 x -61,564,399 = 61,564,399
Notice both answers equal 61,564,399
With that explanation out of the way, let's continue. Next, we take the number 61,564,399 and divide it by 2:
61,564,399 ÷ 2 = 30,782,199.5
If the quotient is a whole number, then 2 and 30,782,199.5 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 | 61,564,399 | |
| -1 | -61,564,399 |
Now, we try dividing 61,564,399 by 3:
61,564,399 ÷ 3 = 20,521,466.3333
If the quotient is a whole number, then 3 and 20,521,466.3333 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 | 61,564,399 | |
| -1 | -61,564,399 |
Let's try dividing by 4:
61,564,399 ÷ 4 = 15,391,099.75
If the quotient is a whole number, then 4 and 15,391,099.75 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 | 61,564,399 | |
| -1 | 61,564,399 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 109 | 299 | 1,417 | 1,889 | 2,507 | 24,557 | 32,591 | 43,447 | 205,901 | 564,811 | 2,676,713 | 4,735,723 | 61,564,399 |
| -1 | -13 | -23 | -109 | -299 | -1,417 | -1,889 | -2,507 | -24,557 | -32,591 | -43,447 | -205,901 | -564,811 | -2,676,713 | -4,735,723 | -61,564,399 |
Here are some more numbers to try:
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