A:
Positive:
1 x 6138837717 x 361108183 x 739619139 x 441643313 x 1961291411 x 435072363 x 259795321 x 11537
Negative:
-1 x -61388377-17 x -3611081-83 x -739619-139 x -441643-313 x -196129-1411 x -43507-2363 x -25979-5321 x -11537
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 61,388,377, 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 | 61,388,377 | |
| -1 | -61,388,377 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,388,377.
Example:
1 x 61,388,377 = 61,388,377
and
-1 x -61,388,377 = 61,388,377
Notice both answers equal 61,388,377
With that explanation out of the way, let's continue. Next, we take the number 61,388,377 and divide it by 2:
61,388,377 ÷ 2 = 30,694,188.5
If the quotient is a whole number, then 2 and 30,694,188.5 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 | 61,388,377 | |
| -1 | -61,388,377 |
Now, we try dividing 61,388,377 by 3:
61,388,377 ÷ 3 = 20,462,792.3333
If the quotient is a whole number, then 3 and 20,462,792.3333 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 | 61,388,377 | |
| -1 | -61,388,377 |
Let's try dividing by 4:
61,388,377 ÷ 4 = 15,347,094.25
If the quotient is a whole number, then 4 and 15,347,094.25 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 | 61,388,377 | |
| -1 | 61,388,377 |
If you did it right, you will end up with this table:
| 1 | 17 | 83 | 139 | 313 | 1,411 | 2,363 | 5,321 | 11,537 | 25,979 | 43,507 | 196,129 | 441,643 | 739,619 | 3,611,081 | 61,388,377 |
| -1 | -17 | -83 | -139 | -313 | -1,411 | -2,363 | -5,321 | -11,537 | -25,979 | -43,507 | -196,129 | -441,643 | -739,619 | -3,611,081 | -61,388,377 |
Here are some more numbers to try:
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