A086671 - cp's OEIS frontend

A086671 Sum of floor(sqrt(d)) where d runs through the divisors of n.

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

[1, 2, 2, 4, 3, 5, 3, 6, 5, 7, 4, 10, 4, 7, 7, 10, 5, 12, 5, 13, 8, 9, 5, 16, 8, 10, 10, 14, 6, 18, 6, 15, 10, 11, 10, 23, 7, 12, 11, 21, 7, 20, 7, 17, 16, 12, 7, 26, 10, 19, 13, 19, 8, 24, 13, 23, 13, 14, 8, 34, 8, 14, 18, 23, 14, 25, 9, 21, 14, 25, 9, 37, 9]

cp's OEIS Frontend

A086671 Sum of floor(sqrt(d)) where d runs through the divisors of n.

Table of values

List of values

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

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

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