A007947 - cp's OEIS frontend

A007947 Largest squarefree number dividing n: the squarefree kernel of n, rad(n), radical of n.

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

[1, 2, 3, 2, 5, 6, 7, 2, 3, 10, 11, 6, 13, 14, 15, 2, 17, 6, 19, 10, 21, 22, 23, 6, 5, 26, 3, 14, 29, 30, 31, 2, 33, 34, 35, 6, 37, 38, 39, 10, 41, 42, 43, 22, 15, 46, 47, 6, 7, 10, 51, 26, 53, 6, 55, 14, 57, 58, 59, 30, 61, 62, 21, 2, 65, 66, 67, 34, 69, 70, 71, 6, 73, 74, 15, 38, 77, 78]

cp's OEIS Frontend

A007947 Largest squarefree number dividing n: the squarefree kernel of n, rad(n), radical of n.

Table of values

List of values

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

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

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