Data update

This commit is contained in:
Ingy döt Net 2023-08-01 14:30:30 -07:00
parent 07c7092a52
commit 61b93a2cd1
313 changed files with 6160 additions and 346 deletions

View file

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// find amicable pairs p1, p2 where each is equal to the other's proper divisor sum
MAX_NUMBER = 20000
pdSum = [1] * ( MAX_NUMBER + 1 ) // table of proper divisors
for i in range( 2, MAX_NUMBER )
for j in range( i + i, MAX_NUMBER, i )
pdSum[ j ] += i
end for
end for
// find the amicable pairs up to 20 000
ap = []
for p1 in range( 1, MAX_NUMBER - 1 )
pdSumP1 = pdSum[ p1 ]
if pdSumP1 > p1 and pdSumP1 <= MAX_NUMBER and pdSum[ pdSumP1 ] == p1 then
print str( p1 ) + " and " + str( pdSumP1 ) + " are an amicable pair"
end if
end for