|
Search: id:A085718
|
|
|
| A085718 |
|
Numbers n such that sopfr(n)/spf(n) is a semiprime and sopfr(n)/lpf(n) is a semiprime, where sopfr(n) = A001414(n) is sum of primes dividing n (with repetition), spf(n) and lpf(n) are smallest and largest primes dividing n, respectively. Also, spf(n)!=lpf(n). |
|
+0
1
|
|
| 72, 576, 648, 750, 800, 900, 960, 1080, 3430, 4116, 4900, 5880, 6272, 7000, 7056, 7938, 8400, 8960, 9450, 10080, 10752, 11340, 12096, 13608, 18750, 20000, 22500, 24000, 25600, 27000, 28800, 30375, 30720, 32400, 34560, 36450, 36864, 37268
(list; graph; listen)
|
|
|
|
|
Search completed in 0.002 seconds
|
