A:
Positive:
1 x 613530855 x 1227061717 x 360900585 x 721801601 x 1020851201 x 510853005 x 204176005 x 10217
Negative:
-1 x -61353085-5 x -12270617-17 x -3609005-85 x -721801-601 x -102085-1201 x -51085-3005 x -20417-6005 x -10217
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 61,353,085, 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 | 61,353,085 | |
| -1 | -61,353,085 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,353,085.
Example:
1 x 61,353,085 = 61,353,085
and
-1 x -61,353,085 = 61,353,085
Notice both answers equal 61,353,085
With that explanation out of the way, let's continue. Next, we take the number 61,353,085 and divide it by 2:
61,353,085 ÷ 2 = 30,676,542.5
If the quotient is a whole number, then 2 and 30,676,542.5 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 | 61,353,085 | |
| -1 | -61,353,085 |
Now, we try dividing 61,353,085 by 3:
61,353,085 ÷ 3 = 20,451,028.3333
If the quotient is a whole number, then 3 and 20,451,028.3333 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 | 61,353,085 | |
| -1 | -61,353,085 |
Let's try dividing by 4:
61,353,085 ÷ 4 = 15,338,271.25
If the quotient is a whole number, then 4 and 15,338,271.25 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 | 61,353,085 | |
| -1 | 61,353,085 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 601 | 1,201 | 3,005 | 6,005 | 10,217 | 20,417 | 51,085 | 102,085 | 721,801 | 3,609,005 | 12,270,617 | 61,353,085 |
| -1 | -5 | -17 | -85 | -601 | -1,201 | -3,005 | -6,005 | -10,217 | -20,417 | -51,085 | -102,085 | -721,801 | -3,609,005 | -12,270,617 | -61,353,085 |
Here are some more numbers to try:
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