\[\boxed{\mathbf{166\ (166).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ a = 3 \cdot 5^{2};\ \ \ b = 3 \cdot 5 \cdot 7\]
\[НОД\ (a;b) = 3 \cdot 5 = 15;\ \ \]
\[НОК\ (a;b) = 3 \cdot 5^{2} \cdot 7 =\]
\[= 21 \cdot 25 = 525.\]
\[2)\ a = 2^{3} \cdot 3^{2} \cdot 5^{4};\ \ \ \ b =\]
\(= 2^{2} \cdot 3^{3} \cdot 5^{2}\)
\[НОД\ (a;b) = 2^{2} \cdot 3^{2} \cdot 5^{2} =\]
\[= 4 \cdot 9 \cdot 25 = 9 \cdot 100 = 900;\ \ \]
\[НОК\ (a;b) = 2^{3} \cdot 3^{3} \cdot 5^{4} =\]
\[= 8 \cdot 27 \cdot 25 \cdot 25 =\]
\[= 200 \cdot 25 \cdot 27 = 5000 \cdot 27 =\]
\[= 135\ 000.\]
\[\boxed{\mathbf{166}.}\]
\[1)\ НОК(2;4;6;8;10) = 120.\]
\[2)\ НОК(4;6;8;9;10) = 360.\]