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marusya05 [52]
3 years ago
14

P1. (3+7 points) What is the smallest positive integer with precisely 5 positive divisors? What is the smallest positive integer

with precisely 60 positive divisors? Show your work and reasoning.
Mathematics
1 answer:
qwelly [4]3 years ago
8 0

Answer:

smallest positive integer with 5 positive divisor is 16

smallest positive integer with 60 positive divisor is 5040

Step-by-step explanation:

given data

precisely positive divisors = 5

precisely positive divisors = 60

solution

we take here a^{x} *b^{y} *c^{z} is express as

= (x+1) × (y+1) × (z+1)

so put here now x is 4

and z = y = 0 and a is least integer more than 1 it will be 2

and b and c ≥ 1

and x^{0} is = 1

so a^{x} *b^{y} *c^{z} is

a^{4} is = 2^{4}  = 16  

so smallest positive integer with 5 positive divisor is 16

and

same like 60 positive divisors

dn = ( a1+1 ) × ( a2+1 ) × ( a3+1 )  ............ ( an+1 )

n = p1^{a1} * p2^{a2} * p3^{a3} * ............ pn^{an} *

n = 7 × 5 × 3² × 2^{4}

n = 5040

smallest positive integer with 60 positive divisor is 5040

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