A353977 - cp's OEIS frontend

A353977 Sum of the nontrivial divisors of n whose arithmetic derivative divides n.

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

[0, 2, 3, 6, 5, 5, 7, 6, 3, 7, 11, 9, 13, 9, 8, 6, 17, 14, 19, 11, 10, 13, 23, 17, 5, 15, 30, 13, 29, 16, 31, 22, 14, 19, 12, 18, 37, 21, 16, 11, 41, 12, 43, 17, 8, 25, 47, 29, 7, 32, 20, 19, 53, 41, 16, 13, 22, 31, 59, 20, 61, 33, 10, 22, 18, 16, 67, 23, 26, 24, 71, 26, 73]

cp's OEIS Frontend

A353977 Sum of the nontrivial divisors of n whose arithmetic derivative divides n.

Table of values

List of values

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

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

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