A034460 - cp's OEIS frontend

A034460 a(n) = usigma(n) - n, where usigma(n) = sum of unitary divisors of n (A034448).

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	6
7	1
8	1
9	1
10	8
11	1
12	8
13	1
14	10
15	9
16	1
17	1
18	12
19	1
20	10
21	11
22	14
23	1
24	12
25	1
26	16
27	1
28	12
29	1
30	42
31	1
32	1
33	15
34	20
35	13
36	14
37	1
38	22
39	17
40	14
41	1
42	54
43	1
44	16
45	15
46	26
47	1
48	20
49	1
50	28
51	21
52	18
53	1
54	30
55	17
56	16
57	23
58	32
59	1
60	60
61	1
62	34
63	17
64	1
65	19
66	78
67	1
68	22
69	27
70	74
71	1
72	18
73	1
74	40
75	29
76	24
77	19
78	90
79	1
80	22
81	1
82	44

[0, 1, 1, 1, 1, 6, 1, 1, 1, 8, 1, 8, 1, 10, 9, 1, 1, 12, 1, 10, 11, 14, 1, 12, 1, 16, 1, 12, 1, 42, 1, 1, 15, 20, 13, 14, 1, 22, 17, 14, 1, 54, 1, 16, 15, 26, 1, 20, 1, 28, 21, 18, 1, 30, 17, 16, 23, 32, 1, 60, 1, 34, 17, 1, 19, 78, 1, 22, 27, 74, 1, 18, 1, 40, 29, 24, 19, 90, 1, 22, 1, 44]

cp's OEIS Frontend

A034460 a(n) = usigma(n) - n, where usigma(n) = sum of unitary divisors of n (A034448).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	6
7	1
8	1
9	1
10	8
11	1
12	8
13	1
14	10
15	9
16	1
17	1
18	12
19	1
20	10
21	11
22	14
23	1
24	12
25	1
26	16
27	1
28	12
29	1
30	42
31	1
32	1
33	15
34	20
35	13
36	14
37	1
38	22
39	17
40	14
41	1
42	54
43	1
44	16
45	15
46	26
47	1
48	20
49	1
50	28
51	21
52	18
53	1
54	30
55	17
56	16
57	23
58	32
59	1
60	60
61	1
62	34
63	17
64	1
65	19
66	78
67	1
68	22
69	27
70	74
71	1
72	18
73	1
74	40
75	29
76	24
77	19
78	90
79	1
80	22
81	1
82	44

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	6
7	1
8	1
9	1
10	8
11	1
12	8
13	1
14	10
15	9
16	1
17	1
18	12
19	1
20	10
21	11
22	14
23	1
24	12
25	1
26	16
27	1
28	12
29	1
30	42
31	1
32	1
33	15
34	20
35	13
36	14
37	1
38	22
39	17
40	14
41	1
42	54
43	1
44	16
45	15
46	26
47	1
48	20
49	1
50	28
51	21
52	18
53	1
54	30
55	17
56	16
57	23
58	32
59	1
60	60
61	1
62	34
63	17
64	1
65	19
66	78
67	1
68	22
69	27
70	74
71	1
72	18
73	1
74	40
75	29
76	24
77	19
78	90
79	1
80	22
81	1
82	44

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	6
7	1
8	1
9	1
10	8
11	1
12	8
13	1
14	10
15	9
16	1
17	1
18	12
19	1
20	10
21	11
22	14
23	1
24	12
25	1
26	16
27	1
28	12
29	1
30	42
31	1
32	1
33	15
34	20
35	13
36	14
37	1
38	22
39	17
40	14
41	1
42	54
43	1
44	16
45	15
46	26
47	1
48	20
49	1
50	28
51	21
52	18
53	1
54	30
55	17
56	16
57	23
58	32
59	1
60	60
61	1
62	34
63	17
64	1
65	19
66	78
67	1
68	22
69	27
70	74
71	1
72	18
73	1
74	40
75	29
76	24
77	19
78	90
79	1
80	22
81	1
82	44