The factors of 49 are: 1 7 49.
http://wiki.answers.com/Q/What_are_factors_of_49

The square root of forty nine is seven. The way to figure out this question is that a number times itself can be a square root. Here is an example 7*7=49.
http://www.ask.com/webanswers/Reference/Other/wha...

The polynomial rxr49, or r^249, can be factored using the difference of squares method to get:
http://www.chacha.com/question/whatfactorrxr%26%...

highest common factor of 49 and 21 is 7.
http://wiki.answers.com/Q/What_is_the_highest_comm...
