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2014-10-13T18:41:37+03:00
642 = 2 * 3 * 107 
3380 = 2² * 5 * 13²
4410 = 2 * 3² * 5 * 7²
19800 = 2³ * 3² * 5² * 11 
33642 = 2 * 3³ * 7 * 89  
52866 = 2 * 3³ * 11 * 89
578490 =  2² * 3 * 5² * 11 * 1753     
648900 =  2² * 3²² * 5² * 7 * 103

     
6 3 6