924 B
924 B
id, title, challengeType, forumTopicId, dashedName
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5900f50f1000cf542c510021 | Problem 418: Factorisation triples | 5 | 302087 | problem-418-factorisation-triples |
--description--
Let n
be a positive integer. An integer triple (a
, b
, c
) is called a factorisation triple of n
if:
1 ≤ a ≤ b ≤ c
a \times b \times c = n
.
Define f(n)
to be a + b + c
for the factorisation triple (a
, b
, c
) of n
which minimises \frac{c}{a}
. One can show that this triple is unique.
For example, f(165) = 19
, f(100\\,100) = 142
and f(20!) = 4\\,034\\,872
.
Find f(43!)
.
--hints--
factorisationTriples()
should return 1177163565297340400
.
assert.strictEqual(factorisationTriples(), 1177163565297340400);
--seed--
--seed-contents--
function factorisationTriples() {
return true;
}
factorisationTriples();
--solutions--
// solution required