A100762 - cp's OEIS frontend

A100762 Let n = 2^e_2 * 3^e_3 * 5^e_5 * ... be the prime factorization of n and let P(n) = A100549(n); then a(n) = Product_{ q <= P(n) } q^e_q; a(1) = 1 by convention.

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	1
8	8
9	9
10	2
11	1
12	12
13	1
14	2
15	1
16	16
17	1
18	18
19	1
20	4
21	1
22	2
23	1
24	24
25	1
26	2
27	27
28	4
29	1
30	2
31	1
32	32
33	1
34	2
35	1
36	36
37	1
38	2
39	1
40	8
41	1
42	2
43	1
44	4
45	9
46	2
47	1
48	48
49	1
50	2
51	1
52	4
53	1
54	54
55	1
56	8
57	1
58	2
59	1
60	12
61	1
62	2
63	9
64	64
65	1
66	2
67	1
68	4
69	1
70	2
71	1
72	72
73	1
74	2
75	3
76	4
77	1
78	2
79	1
80	80
81	81
82	2
83	1
84	12
85	1
86	2
87	1
88	8
89	1
90	18
91	1
92	4
93	1
94	2
95	1
96	96
97	1

[1, 2, 1, 4, 1, 2, 1, 8, 9, 2, 1, 12, 1, 2, 1, 16, 1, 18, 1, 4, 1, 2, 1, 24, 1, 2, 27, 4, 1, 2, 1, 32, 1, 2, 1, 36, 1, 2, 1, 8, 1, 2, 1, 4, 9, 2, 1, 48, 1, 2, 1, 4, 1, 54, 1, 8, 1, 2, 1, 12, 1, 2, 9, 64, 1, 2, 1, 4, 1, 2, 1, 72, 1, 2, 3, 4, 1, 2, 1, 80, 81, 2, 1, 12, 1, 2, 1, 8, 1, 18, 1, 4, 1, 2, 1, 96, 1]

cp's OEIS Frontend

A100762 Let n = 2^e_2 * 3^e_3 * 5^e_5 * ... be the prime factorization of n and let P(n) = A100549(n); then a(n) = Product_{ q <= P(n) } q^e_q; a(1) = 1 by convention.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	1
8	8
9	9
10	2
11	1
12	12
13	1
14	2
15	1
16	16
17	1
18	18
19	1
20	4
21	1
22	2
23	1
24	24
25	1
26	2
27	27
28	4
29	1
30	2
31	1
32	32
33	1
34	2
35	1
36	36
37	1
38	2
39	1
40	8
41	1
42	2
43	1
44	4
45	9
46	2
47	1
48	48
49	1
50	2
51	1
52	4
53	1
54	54
55	1
56	8
57	1
58	2
59	1
60	12
61	1
62	2
63	9
64	64
65	1
66	2
67	1
68	4
69	1
70	2
71	1
72	72
73	1
74	2
75	3
76	4
77	1
78	2
79	1
80	80
81	81
82	2
83	1
84	12
85	1
86	2
87	1
88	8
89	1
90	18
91	1
92	4
93	1
94	2
95	1
96	96
97	1

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	1
8	8
9	9
10	2
11	1
12	12
13	1
14	2
15	1
16	16
17	1
18	18
19	1
20	4
21	1
22	2
23	1
24	24
25	1
26	2
27	27
28	4
29	1
30	2
31	1
32	32
33	1
34	2
35	1
36	36
37	1
38	2
39	1
40	8
41	1
42	2
43	1
44	4
45	9
46	2
47	1
48	48
49	1
50	2
51	1
52	4
53	1
54	54
55	1
56	8
57	1
58	2
59	1
60	12
61	1
62	2
63	9
64	64
65	1
66	2
67	1
68	4
69	1
70	2
71	1
72	72
73	1
74	2
75	3
76	4
77	1
78	2
79	1
80	80
81	81
82	2
83	1
84	12
85	1
86	2
87	1
88	8
89	1
90	18
91	1
92	4
93	1
94	2
95	1
96	96
97	1

n	a(n)
1	1
2	2
3	1
4	4
5	1
6	2
7	1
8	8
9	9
10	2
11	1
12	12
13	1
14	2
15	1
16	16
17	1
18	18
19	1
20	4
21	1
22	2
23	1
24	24
25	1
26	2
27	27
28	4
29	1
30	2
31	1
32	32
33	1
34	2
35	1
36	36
37	1
38	2
39	1
40	8
41	1
42	2
43	1
44	4
45	9
46	2
47	1
48	48
49	1
50	2
51	1
52	4
53	1
54	54
55	1
56	8
57	1
58	2
59	1
60	12
61	1
62	2
63	9
64	64
65	1
66	2
67	1
68	4
69	1
70	2
71	1
72	72
73	1
74	2
75	3
76	4
77	1
78	2
79	1
80	80
81	81
82	2
83	1
84	12
85	1
86	2
87	1
88	8
89	1
90	18
91	1
92	4
93	1
94	2
95	1
96	96
97	1