A:
Positive:
1 x 610516555 x 122103317 x 872166519 x 321324535 x 174433395 x 642649133 x 459035665 x 91807
Negative:
-1 x -61051655-5 x -12210331-7 x -8721665-19 x -3213245-35 x -1744333-95 x -642649-133 x -459035-665 x -91807
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 61,051,655, 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 | 61,051,655 | |
| -1 | -61,051,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 61,051,655.
Example:
1 x 61,051,655 = 61,051,655
and
-1 x -61,051,655 = 61,051,655
Notice both answers equal 61,051,655
With that explanation out of the way, let's continue. Next, we take the number 61,051,655 and divide it by 2:
61,051,655 ÷ 2 = 30,525,827.5
If the quotient is a whole number, then 2 and 30,525,827.5 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 | 61,051,655 | |
| -1 | -61,051,655 |
Now, we try dividing 61,051,655 by 3:
61,051,655 ÷ 3 = 20,350,551.6667
If the quotient is a whole number, then 3 and 20,350,551.6667 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 | 61,051,655 | |
| -1 | -61,051,655 |
Let's try dividing by 4:
61,051,655 ÷ 4 = 15,262,913.75
If the quotient is a whole number, then 4 and 15,262,913.75 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 | 61,051,655 | |
| -1 | 61,051,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 665 | 91,807 | 459,035 | 642,649 | 1,744,333 | 3,213,245 | 8,721,665 | 12,210,331 | 61,051,655 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -665 | -91,807 | -459,035 | -642,649 | -1,744,333 | -3,213,245 | -8,721,665 | -12,210,331 | -61,051,655 |
Here are some more numbers to try:
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