A:
Positive:
1 x 784467255 x 156893457 x 1120667519 x 412877525 x 313786935 x 224133595 x 825755133 x 589825175 x 448267475 x 165151665 x 1179653325 x 23593
Negative:
-1 x -78446725-5 x -15689345-7 x -11206675-19 x -4128775-25 x -3137869-35 x -2241335-95 x -825755-133 x -589825-175 x -448267-475 x -165151-665 x -117965-3325 x -23593
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 78,446,725, 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 | 78,446,725 | |
| -1 | -78,446,725 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,446,725.
Example:
1 x 78,446,725 = 78,446,725
and
-1 x -78,446,725 = 78,446,725
Notice both answers equal 78,446,725
With that explanation out of the way, let's continue. Next, we take the number 78,446,725 and divide it by 2:
78,446,725 ÷ 2 = 39,223,362.5
If the quotient is a whole number, then 2 and 39,223,362.5 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 | 78,446,725 | |
| -1 | -78,446,725 |
Now, we try dividing 78,446,725 by 3:
78,446,725 ÷ 3 = 26,148,908.3333
If the quotient is a whole number, then 3 and 26,148,908.3333 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 | 78,446,725 | |
| -1 | -78,446,725 |
Let's try dividing by 4:
78,446,725 ÷ 4 = 19,611,681.25
If the quotient is a whole number, then 4 and 19,611,681.25 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 | 78,446,725 | |
| -1 | 78,446,725 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 25 | 35 | 95 | 133 | 175 | 475 | 665 | 3,325 | 23,593 | 117,965 | 165,151 | 448,267 | 589,825 | 825,755 | 2,241,335 | 3,137,869 | 4,128,775 | 11,206,675 | 15,689,345 | 78,446,725 |
| -1 | -5 | -7 | -19 | -25 | -35 | -95 | -133 | -175 | -475 | -665 | -3,325 | -23,593 | -117,965 | -165,151 | -448,267 | -589,825 | -825,755 | -2,241,335 | -3,137,869 | -4,128,775 | -11,206,675 | -15,689,345 | -78,446,725 |
Here are some more numbers to try:
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