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Forum: Aliquot Sequences

2020-07-08, 14:18

Replies: 15

aliquot sum formula

Views: 10,796

Posted By garambois

Yes, you can calculate B without calculating C,...

Yes, you can calculate B without calculating C, but it is infinitely longer in time.
The above method is by far the fastest, if you know the decomposition of A into prime factors.
The problem is...

Forum: Aliquot Sequences

2020-07-08, 12:30

Replies: 15

aliquot sum formula

Views: 10,796

Posted By garambois

If A = 2^400000 * 5 = 2^400000 * 5^1 Then, C...

If A = 2^400000 * 5 = 2^400000 * 5^1
Then,
C = (2^(400000+1)-1 ) / (2-1) * ((5^(1+1)-1)) / (5-1)
And then, B = C - A

If A = 3^100000 * 11 = 3^100000 * 11^1
Then,
C = (3^(100000+1)-1 ) /...

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