Dodatnie dzielniki liczby 24: 1, 2, 3, 4, 6, 8, 12, 24.

Dodatnie dzielniki liczby 36: 1, 2, 3, 4, 6, 9, 12, 18, 36.

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Zatem:

$A=\left\{1,2,3,4,6,8,12,24\right\}$  

$B=\left\{1,2,3,4,6,9,12,18,36\right\}$  

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$A\cup B=\left\{1,2,3,4,6,8,9,12,18,24,36\right\}$  

$A\cap B=\left\{1,2,3,4,6,12\right\}$  

$A\backslash B=\left\{8,24\right\}$  

$B\backslash A=\left\{9,18,36\right\}$