How many positive divisors of 20020^12 have 7 as their units digit?

• can any one plz explain
  r these questions gonna come in tcs aptitude test
  
• 11 years agoHelpfull: Yes(7) No(0)
• 114 is the answer
• 11 years agoHelpfull: Yes(3) No(7)
• ans will be 546 +ve divisor
• 11 years agoHelpfull: Yes(2) No(0)
• 7 can be units digit..
  1. divisible by 7
  2. divisible by 3^3
  
  for 20020 factors are= 2X2X5X7X143
  therefore 7 is one such factor and it's going to occur 1X12 times.
  3^3 is going to occur 4 as (12/3) times.
  hence, 16 is the probable answer.
• 11 years agoHelpfull: Yes(1) No(16)