A369319 - cp's OEIS frontend

A369319 a(n) is the sum of the greatest common exponential divisor of n and k over the positive numbers k that do not exceed n.

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	6
7	7
8	12
9	12
10	10
11	11
12	18
13	13
14	14
15	15
16	24
17	17
18	24
19	19
20	30
21	21
22	22
23	23
24	36
25	30
26	26
27	33
28	42
29	29
30	30
31	31
32	40
33	33
34	34
35	35
36	72
37	37
38	38
39	39
40	60
41	41
42	42
43	43
44	66
45	60
46	46
47	47
48	72
49	56
50	60
51	51
52	78
53	53
54	66
55	55
56	84
57	57
58	58
59	59
60	90
61	61
62	62
63	84
64	84
65	65
66	66
67	67

[1, 2, 3, 6, 5, 6, 7, 12, 12, 10, 11, 18, 13, 14, 15, 24, 17, 24, 19, 30, 21, 22, 23, 36, 30, 26, 33, 42, 29, 30, 31, 40, 33, 34, 35, 72, 37, 38, 39, 60, 41, 42, 43, 66, 60, 46, 47, 72, 56, 60, 51, 78, 53, 66, 55, 84, 57, 58, 59, 90, 61, 62, 84, 84, 65, 66, 67]

cp's OEIS Frontend

A369319 a(n) is the sum of the greatest common exponential divisor of n and k over the positive numbers k that do not exceed n.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	6
7	7
8	12
9	12
10	10
11	11
12	18
13	13
14	14
15	15
16	24
17	17
18	24
19	19
20	30
21	21
22	22
23	23
24	36
25	30
26	26
27	33
28	42
29	29
30	30
31	31
32	40
33	33
34	34
35	35
36	72
37	37
38	38
39	39
40	60
41	41
42	42
43	43
44	66
45	60
46	46
47	47
48	72
49	56
50	60
51	51
52	78
53	53
54	66
55	55
56	84
57	57
58	58
59	59
60	90
61	61
62	62
63	84
64	84
65	65
66	66
67	67

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	6
7	7
8	12
9	12
10	10
11	11
12	18
13	13
14	14
15	15
16	24
17	17
18	24
19	19
20	30
21	21
22	22
23	23
24	36
25	30
26	26
27	33
28	42
29	29
30	30
31	31
32	40
33	33
34	34
35	35
36	72
37	37
38	38
39	39
40	60
41	41
42	42
43	43
44	66
45	60
46	46
47	47
48	72
49	56
50	60
51	51
52	78
53	53
54	66
55	55
56	84
57	57
58	58
59	59
60	90
61	61
62	62
63	84
64	84
65	65
66	66
67	67

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	6
7	7
8	12
9	12
10	10
11	11
12	18
13	13
14	14
15	15
16	24
17	17
18	24
19	19
20	30
21	21
22	22
23	23
24	36
25	30
26	26
27	33
28	42
29	29
30	30
31	31
32	40
33	33
34	34
35	35
36	72
37	37
38	38
39	39
40	60
41	41
42	42
43	43
44	66
45	60
46	46
47	47
48	72
49	56
50	60
51	51
52	78
53	53
54	66
55	55
56	84
57	57
58	58
59	59
60	90
61	61
62	62
63	84
64	84
65	65
66	66
67	67