Write all factors of $729$ .
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Solution

Factors of $729$ are the integers that divide the original number (i.e. $729$ ) completely. A factor divides the number into equal number of parts. The factors will be less than or equal to $729$ , but they could not be greater than the original number. Also, $729$ is a perfect cube, such that;
$729 = 9 x 9 x 9 = 9^{3}$
$729 \div 1 = 729 729 \div 3 = 243 729 \div 9 = 81 729 \div 27 = 27 729 \div 81 = 9 729 \div 243 = 3 729 \div 729 = 1$
Thus, we can conclude that only $1, 3, 9, 27, 81, 243 a n d 729$ are the factors of $729$

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