А) 30 = 2*3*5,
<span>70 = 2*5*7, </span>
<span>42 = 2*3*7, </span>
<span>110 = 2*5*11. </span>
<span>б) 16 = 2*2*2*2, </span>
<span>48 = 2*2*2*2*3, </span>
<span>36 = 2*2*3*3, </span>
<span>63 = 3*3*7. </span>
<span>в) 10 = 2*5, </span>
<span>100 = 2*2*5*5, </span>
<span>1000 = 2*2*2*5*5*5, </span>
<span>10000 = 2*2*2*2*5*5*5*5. </span>
<span>г) 90 = 2*3*3*5, </span>
<span>990 = 2*3*3*5*11, </span>
<span>630 = 2*3*3*5*7.</span>