A:
Positive:
1 x 618207555 x 1236415117 x 363651561 x 101345585 x 727303305 x 2026911037 x 596155185 x 11923
Negative:
-1 x -61820755-5 x -12364151-17 x -3636515-61 x -1013455-85 x -727303-305 x -202691-1037 x -59615-5185 x -11923
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 61,820,755, 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 | 61,820,755 | |
| -1 | -61,820,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,820,755.
Example:
1 x 61,820,755 = 61,820,755
and
-1 x -61,820,755 = 61,820,755
Notice both answers equal 61,820,755
With that explanation out of the way, let's continue. Next, we take the number 61,820,755 and divide it by 2:
61,820,755 ÷ 2 = 30,910,377.5
If the quotient is a whole number, then 2 and 30,910,377.5 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 | 61,820,755 | |
| -1 | -61,820,755 |
Now, we try dividing 61,820,755 by 3:
61,820,755 ÷ 3 = 20,606,918.3333
If the quotient is a whole number, then 3 and 20,606,918.3333 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 | 61,820,755 | |
| -1 | -61,820,755 |
Let's try dividing by 4:
61,820,755 ÷ 4 = 15,455,188.75
If the quotient is a whole number, then 4 and 15,455,188.75 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 | 61,820,755 | |
| -1 | 61,820,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 61 | 85 | 305 | 1,037 | 5,185 | 11,923 | 59,615 | 202,691 | 727,303 | 1,013,455 | 3,636,515 | 12,364,151 | 61,820,755 |
| -1 | -5 | -17 | -61 | -85 | -305 | -1,037 | -5,185 | -11,923 | -59,615 | -202,691 | -727,303 | -1,013,455 | -3,636,515 | -12,364,151 | -61,820,755 |
Here are some more numbers to try:
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