A:
Positive:
1 x 25771555 x 5154317 x 36816535 x 7363349 x 5259567 x 38465157 x 16415245 x 10519335 x 7693469 x 5495785 x 32831099 x 2345
Negative:
-1 x -2577155-5 x -515431-7 x -368165-35 x -73633-49 x -52595-67 x -38465-157 x -16415-245 x -10519-335 x -7693-469 x -5495-785 x -3283-1099 x -2345
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 2,577,155, 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 | 2,577,155 | |
| -1 | -2,577,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,577,155.
Example:
1 x 2,577,155 = 2,577,155
and
-1 x -2,577,155 = 2,577,155
Notice both answers equal 2,577,155
With that explanation out of the way, let's continue. Next, we take the number 2,577,155 and divide it by 2:
2,577,155 ÷ 2 = 1,288,577.5
If the quotient is a whole number, then 2 and 1,288,577.5 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 | 2,577,155 | |
| -1 | -2,577,155 |
Now, we try dividing 2,577,155 by 3:
2,577,155 ÷ 3 = 859,051.6667
If the quotient is a whole number, then 3 and 859,051.6667 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 | 2,577,155 | |
| -1 | -2,577,155 |
Let's try dividing by 4:
2,577,155 ÷ 4 = 644,288.75
If the quotient is a whole number, then 4 and 644,288.75 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 | 2,577,155 | |
| -1 | 2,577,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 67 | 157 | 245 | 335 | 469 | 785 | 1,099 | 2,345 | 3,283 | 5,495 | 7,693 | 10,519 | 16,415 | 38,465 | 52,595 | 73,633 | 368,165 | 515,431 | 2,577,155 |
| -1 | -5 | -7 | -35 | -49 | -67 | -157 | -245 | -335 | -469 | -785 | -1,099 | -2,345 | -3,283 | -5,495 | -7,693 | -10,519 | -16,415 | -38,465 | -52,595 | -73,633 | -368,165 | -515,431 | -2,577,155 |
Here are some more numbers to try:
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