A:
Positive:
1 x 616877755 x 1233755519 x 324672525 x 246751161 x 101127595 x 649345305 x 202255475 x 1298691159 x 532251525 x 404512129 x 289755795 x 10645
Negative:
-1 x -61687775-5 x -12337555-19 x -3246725-25 x -2467511-61 x -1011275-95 x -649345-305 x -202255-475 x -129869-1159 x -53225-1525 x -40451-2129 x -28975-5795 x -10645
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 61,687,775, 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 | 61,687,775 | |
| -1 | -61,687,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,687,775.
Example:
1 x 61,687,775 = 61,687,775
and
-1 x -61,687,775 = 61,687,775
Notice both answers equal 61,687,775
With that explanation out of the way, let's continue. Next, we take the number 61,687,775 and divide it by 2:
61,687,775 ÷ 2 = 30,843,887.5
If the quotient is a whole number, then 2 and 30,843,887.5 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 | 61,687,775 | |
| -1 | -61,687,775 |
Now, we try dividing 61,687,775 by 3:
61,687,775 ÷ 3 = 20,562,591.6667
If the quotient is a whole number, then 3 and 20,562,591.6667 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 | 61,687,775 | |
| -1 | -61,687,775 |
Let's try dividing by 4:
61,687,775 ÷ 4 = 15,421,943.75
If the quotient is a whole number, then 4 and 15,421,943.75 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 | 61,687,775 | |
| -1 | 61,687,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 61 | 95 | 305 | 475 | 1,159 | 1,525 | 2,129 | 5,795 | 10,645 | 28,975 | 40,451 | 53,225 | 129,869 | 202,255 | 649,345 | 1,011,275 | 2,467,511 | 3,246,725 | 12,337,555 | 61,687,775 |
| -1 | -5 | -19 | -25 | -61 | -95 | -305 | -475 | -1,159 | -1,525 | -2,129 | -5,795 | -10,645 | -28,975 | -40,451 | -53,225 | -129,869 | -202,255 | -649,345 | -1,011,275 | -2,467,511 | -3,246,725 | -12,337,555 | -61,687,775 |
Here are some more numbers to try:
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