A:
Positive:
1 x 611655655 x 1223311343 x 142245547 x 1301395215 x 284491235 x 2602792021 x 302656053 x 10105
Negative:
-1 x -61165565-5 x -12233113-43 x -1422455-47 x -1301395-215 x -284491-235 x -260279-2021 x -30265-6053 x -10105
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 61,165,565, 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 | 61,165,565 | |
| -1 | -61,165,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,165,565.
Example:
1 x 61,165,565 = 61,165,565
and
-1 x -61,165,565 = 61,165,565
Notice both answers equal 61,165,565
With that explanation out of the way, let's continue. Next, we take the number 61,165,565 and divide it by 2:
61,165,565 ÷ 2 = 30,582,782.5
If the quotient is a whole number, then 2 and 30,582,782.5 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 | 61,165,565 | |
| -1 | -61,165,565 |
Now, we try dividing 61,165,565 by 3:
61,165,565 ÷ 3 = 20,388,521.6667
If the quotient is a whole number, then 3 and 20,388,521.6667 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 | 61,165,565 | |
| -1 | -61,165,565 |
Let's try dividing by 4:
61,165,565 ÷ 4 = 15,291,391.25
If the quotient is a whole number, then 4 and 15,291,391.25 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 | 61,165,565 | |
| -1 | 61,165,565 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 47 | 215 | 235 | 2,021 | 6,053 | 10,105 | 30,265 | 260,279 | 284,491 | 1,301,395 | 1,422,455 | 12,233,113 | 61,165,565 |
| -1 | -5 | -43 | -47 | -215 | -235 | -2,021 | -6,053 | -10,105 | -30,265 | -260,279 | -284,491 | -1,301,395 | -1,422,455 | -12,233,113 | -61,165,565 |
Here are some more numbers to try:
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