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How many even divisors does 7! + 6! have?

 Jun 27, 2022
 #1
avatar+124676 
+1

7! + 6! =   5760

 

1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 12 | 15 | 16 | 18 | 20 | 24 | 30 | 32 | 36 | 40 | 45 | 48 | 60 | 64 | 72 | 80 | 90 | 96 | 120 | 128 | 144 | 160 | 180 | 192 | 240 | 288 | 320 | 360 | 384 | 480 | 576 | 640 | 720 | 960 | 1152 | 1440 | 1920 | 2880 | 5760 (48 divisors)

 

Count 'em up  !!!!   [easiest to  just count the odd divisors and  subtract this number  from  48   ]

 

 

 

cool cool cool

 Jun 27, 2022

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