A363627 - cp's OEIS frontend

A363627 a(n) = greatest product < n of some subset of the divisors of n, or if n is in A008578 then a(n) = n.

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	3
7	7
8	4
9	3
10	5
11	11
12	8
13	13
14	7
15	5
16	8
17	17
18	12
19	19
20	10
21	7
22	11
23	23
24	18
25	5
26	13
27	9
28	14
29	29
30	20
31	31
32	16
33	11
34	17
35	7
36	27
37	37
38	19
39	13
40	32
41	41
42	36
43	43
44	22
45	27
46	23
47	47
48	36
49	7
50	25
51	17
52	26
53	53
54	36
55	11
56	32

[1, 2, 3, 2, 5, 3, 7, 4, 3, 5, 11, 8, 13, 7, 5, 8, 17, 12, 19, 10, 7, 11, 23, 18, 5, 13, 9, 14, 29, 20, 31, 16, 11, 17, 7, 27, 37, 19, 13, 32, 41, 36, 43, 22, 27, 23, 47, 36, 7, 25, 17, 26, 53, 36, 11, 32]

cp's OEIS Frontend

A363627 a(n) = greatest product < n of some subset of the divisors of n, or if n is in A008578 then a(n) = n.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	3
7	7
8	4
9	3
10	5
11	11
12	8
13	13
14	7
15	5
16	8
17	17
18	12
19	19
20	10
21	7
22	11
23	23
24	18
25	5
26	13
27	9
28	14
29	29
30	20
31	31
32	16
33	11
34	17
35	7
36	27
37	37
38	19
39	13
40	32
41	41
42	36
43	43
44	22
45	27
46	23
47	47
48	36
49	7
50	25
51	17
52	26
53	53
54	36
55	11
56	32

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	3
7	7
8	4
9	3
10	5
11	11
12	8
13	13
14	7
15	5
16	8
17	17
18	12
19	19
20	10
21	7
22	11
23	23
24	18
25	5
26	13
27	9
28	14
29	29
30	20
31	31
32	16
33	11
34	17
35	7
36	27
37	37
38	19
39	13
40	32
41	41
42	36
43	43
44	22
45	27
46	23
47	47
48	36
49	7
50	25
51	17
52	26
53	53
54	36
55	11
56	32

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	3
7	7
8	4
9	3
10	5
11	11
12	8
13	13
14	7
15	5
16	8
17	17
18	12
19	19
20	10
21	7
22	11
23	23
24	18
25	5
26	13
27	9
28	14
29	29
30	20
31	31
32	16
33	11
34	17
35	7
36	27
37	37
38	19
39	13
40	32
41	41
42	36
43	43
44	22
45	27
46	23
47	47
48	36
49	7
50	25
51	17
52	26
53	53
54	36
55	11
56	32