ONLY ONE NUMBER!!!!!!
2007-04-23 11:05:25 · 4 answers · asked by pico 3 in Science & Mathematics ➔ Mathematics
There are infinitely many. Pick any 13 prime numbers and multiply them. You'll get a different number with 13 factors for every different choice of primes,.
2007-04-23 11:13:52 · answer #1 · answered by Demiurge42 7 · 0⤊ 1⤋
I'm not sure that it is the only one, but 400 is the lowest number that has 13 factors: 1, 2, 4, 5, 8, 10, 20, 40, 50, 80, 100, 200, 400.
(To find it, we know it has to be a perfect square. All other numbers have an even number of factors.)
2007-04-23 18:12:19 · answer #2 · answered by Amy W 6 · 0⤊ 1⤋
400
the factors are:
1
2
4
5
8
10
20
40
50
80
100
200
400
2007-04-23 18:14:01 · answer #3 · answered by Anonymous · 0⤊ 1⤋
rainwater harvesting is not an invention ,its a concept that has been around for at least 200.000 years
2007-04-23 18:41:42 · answer #4 · answered by Anonymous · 0⤊ 1⤋