A:
Positive:
1 x 613265877 x 876094131 x 197827747 x 130482149 x 1251563217 x 282611329 x 186403859 x 713931457 x 420911519 x 403732303 x 266296013 x 10199
Negative:
-1 x -61326587-7 x -8760941-31 x -1978277-47 x -1304821-49 x -1251563-217 x -282611-329 x -186403-859 x -71393-1457 x -42091-1519 x -40373-2303 x -26629-6013 x -10199
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 61,326,587, 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 | 61,326,587 | |
| -1 | -61,326,587 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,326,587.
Example:
1 x 61,326,587 = 61,326,587
and
-1 x -61,326,587 = 61,326,587
Notice both answers equal 61,326,587
With that explanation out of the way, let's continue. Next, we take the number 61,326,587 and divide it by 2:
61,326,587 ÷ 2 = 30,663,293.5
If the quotient is a whole number, then 2 and 30,663,293.5 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 | 61,326,587 | |
| -1 | -61,326,587 |
Now, we try dividing 61,326,587 by 3:
61,326,587 ÷ 3 = 20,442,195.6667
If the quotient is a whole number, then 3 and 20,442,195.6667 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 | 61,326,587 | |
| -1 | -61,326,587 |
Let's try dividing by 4:
61,326,587 ÷ 4 = 15,331,646.75
If the quotient is a whole number, then 4 and 15,331,646.75 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 | 61,326,587 | |
| -1 | 61,326,587 |
If you did it right, you will end up with this table:
| 1 | 7 | 31 | 47 | 49 | 217 | 329 | 859 | 1,457 | 1,519 | 2,303 | 6,013 | 10,199 | 26,629 | 40,373 | 42,091 | 71,393 | 186,403 | 282,611 | 1,251,563 | 1,304,821 | 1,978,277 | 8,760,941 | 61,326,587 |
| -1 | -7 | -31 | -47 | -49 | -217 | -329 | -859 | -1,457 | -1,519 | -2,303 | -6,013 | -10,199 | -26,629 | -40,373 | -42,091 | -71,393 | -186,403 | -282,611 | -1,251,563 | -1,304,821 | -1,978,277 | -8,760,941 | -61,326,587 |
Here are some more numbers to try:
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