amicable numbers การใช้

• The smallest pair of amicable numbers is ( 284 ).
• Similarly, none of the amicable numbers or sociable numbers are untouchable.
• :There are periodic sequences, such as Amicable numbers.
• Fermat and Descartes also rediscovered pairs of amicable numbers known to Arab mathematicians.
• A pair of amicable numbers is a set of sociable numbers of order 2.
• :Yes, clearly 10 is not an amicable number or even a sociable number.
• "' Amicable numbers "'are two different numbers so related that the period 2.
• It is not known whether a prime power " p n " can be an amicable number.
• In 1955, Paul ErdQ
  s showed that the density of amicable numbers, relative to the positive integers, was 0.
• In number theory, Fermat studied Pell's equation, perfect numbers, amicable numbers and what would later become Fermat numbers.
• He worked with prime numbers, pentominos, amicable numbers and developed mathematical concepts used in applications such as cyber security with cryptarithmetic.
• The 9th Century Sabian mathematician, physician, astronomer and translator Th
  
  bit ibn Qurra is credited as the first to study these numbers and their relation to amicable numbers.
• I brought up the 3-amicable numbers because that's what suggested it to me, which happened because it seems a likely enough candidate for this.
• Mathematical topics covered in the book include irrational and amicable numbers; the discoveries of Pythagoras, Archimedes and Euclid; and the problems of squaring the circle and doubling the cube.
• Al-Qabisi wrote a modest book on arithmetic, in which he discusses Euclid's perfect numbers and how to form them, and Th
  
  bit ibn Qurra's theorem on amicable numbers.
• In spite of the similarity in name, there is no specific relationship between the friendly numbers and the amicable numbers or the sociable numbers, although the definitions of the latter two also involve the divisor function.
• Its divisors are 1, 2, 4, 71, and 142, adding up to 220, in turn, the divisors of 220 add up to 284, making the two a pair of amicable numbers.
• :: : : And I've written a more substantial article Friendly number ( replacing a remaining redirect to Amicable number ) and redirected both Friendly pair and Solitary number to there .-- Talk 21 : 14, 5 June 2007 ( UTC)
• My guess is that author of our solitary number article saw the definition that says a solitary number is a number that is not a friendly number ( maybe here at MathWorld ), saw that friendly number at Wikipedia redirects to amicable number, and then wrote the article bypassing the redirect, not realising that " friendly number " has two distinct meanings.