A:
Positive:
1 x 618138655 x 1236277337 x 167064567 x 922595185 x 334129335 x 1845192479 x 249354987 x 12395
Negative:
-1 x -61813865-5 x -12362773-37 x -1670645-67 x -922595-185 x -334129-335 x -184519-2479 x -24935-4987 x -12395
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 61,813,865, 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 | 61,813,865 | |
| -1 | -61,813,865 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,813,865.
Example:
1 x 61,813,865 = 61,813,865
and
-1 x -61,813,865 = 61,813,865
Notice both answers equal 61,813,865
With that explanation out of the way, let's continue. Next, we take the number 61,813,865 and divide it by 2:
61,813,865 ÷ 2 = 30,906,932.5
If the quotient is a whole number, then 2 and 30,906,932.5 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 | 61,813,865 | |
| -1 | -61,813,865 |
Now, we try dividing 61,813,865 by 3:
61,813,865 ÷ 3 = 20,604,621.6667
If the quotient is a whole number, then 3 and 20,604,621.6667 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 | 61,813,865 | |
| -1 | -61,813,865 |
Let's try dividing by 4:
61,813,865 ÷ 4 = 15,453,466.25
If the quotient is a whole number, then 4 and 15,453,466.25 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 | 61,813,865 | |
| -1 | 61,813,865 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 67 | 185 | 335 | 2,479 | 4,987 | 12,395 | 24,935 | 184,519 | 334,129 | 922,595 | 1,670,645 | 12,362,773 | 61,813,865 |
| -1 | -5 | -37 | -67 | -185 | -335 | -2,479 | -4,987 | -12,395 | -24,935 | -184,519 | -334,129 | -922,595 | -1,670,645 | -12,362,773 | -61,813,865 |
Here are some more numbers to try:
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