A:
Positive:
1 x 2514526311 x 228593313 x 1934251101 x 248963143 x 1758411111 x 226331313 x 191511741 x 14443
Negative:
-1 x -25145263-11 x -2285933-13 x -1934251-101 x -248963-143 x -175841-1111 x -22633-1313 x -19151-1741 x -14443
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 25,145,263, 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 | 25,145,263 | |
| -1 | -25,145,263 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,145,263.
Example:
1 x 25,145,263 = 25,145,263
and
-1 x -25,145,263 = 25,145,263
Notice both answers equal 25,145,263
With that explanation out of the way, let's continue. Next, we take the number 25,145,263 and divide it by 2:
25,145,263 ÷ 2 = 12,572,631.5
If the quotient is a whole number, then 2 and 12,572,631.5 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 | 25,145,263 | |
| -1 | -25,145,263 |
Now, we try dividing 25,145,263 by 3:
25,145,263 ÷ 3 = 8,381,754.3333
If the quotient is a whole number, then 3 and 8,381,754.3333 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 | 25,145,263 | |
| -1 | -25,145,263 |
Let's try dividing by 4:
25,145,263 ÷ 4 = 6,286,315.75
If the quotient is a whole number, then 4 and 6,286,315.75 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 | 25,145,263 | |
| -1 | 25,145,263 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 101 | 143 | 1,111 | 1,313 | 1,741 | 14,443 | 19,151 | 22,633 | 175,841 | 248,963 | 1,934,251 | 2,285,933 | 25,145,263 |
| -1 | -11 | -13 | -101 | -143 | -1,111 | -1,313 | -1,741 | -14,443 | -19,151 | -22,633 | -175,841 | -248,963 | -1,934,251 | -2,285,933 | -25,145,263 |
Here are some more numbers to try:
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