A210732 - cp's OEIS frontend

A210732 Numbers n for which sigma(n)=sigma(x)+sigma(y), where n=x+y and sigma(n) is the sum of the anti-divisors of n.

n	a(n)
3	6
4	9
5	15
6	18
7	21
8	24
9	27
10	30
11	31
12	33
13	37
14	39
15	43
16	44
17	46
18	47
19	53
20	56
21	57
22	62
23	65
24	66
25	70
26	73
27	74
28	75
29	76
30	78
31	81
32	83
33	86
34	88
35	90
36	91
37	92
38	93
39	97
40	99
41	102
42	103
43	106
44	107
45	109
46	110
47	114
48	116
49	117
50	118
51	119
52	121
53	122
54	123
55	125
56	126
57	127
58	129
59	131
60	133
61	135
62	136

[6, 9, 15, 18, 21, 24, 27, 30, 31, 33, 37, 39, 43, 44, 46, 47, 53, 56, 57, 62, 65, 66, 70, 73, 74, 75, 76, 78, 81, 83, 86, 88, 90, 91, 92, 93, 97, 99, 102, 103, 106, 107, 109, 110, 114, 116, 117, 118, 119, 121, 122, 123, 125, 126, 127, 129, 131, 133, 135, 136]

cp's OEIS Frontend

A210732 Numbers n for which sigma(n)=sigma(x)+sigma(y), where n=x+y and sigma(n) is the sum of the anti-divisors of n.

Table of values

List of values

n	a(n)
3	6
4	9
5	15
6	18
7	21
8	24
9	27
10	30
11	31
12	33
13	37
14	39
15	43
16	44
17	46
18	47
19	53
20	56
21	57
22	62
23	65
24	66
25	70
26	73
27	74
28	75
29	76
30	78
31	81
32	83
33	86
34	88
35	90
36	91
37	92
38	93
39	97
40	99
41	102
42	103
43	106
44	107
45	109
46	110
47	114
48	116
49	117
50	118
51	119
52	121
53	122
54	123
55	125
56	126
57	127
58	129
59	131
60	133
61	135
62	136

n	a(n)
3	6
4	9
5	15
6	18
7	21
8	24
9	27
10	30
11	31
12	33
13	37
14	39
15	43
16	44
17	46
18	47
19	53
20	56
21	57
22	62
23	65
24	66
25	70
26	73
27	74
28	75
29	76
30	78
31	81
32	83
33	86
34	88
35	90
36	91
37	92
38	93
39	97
40	99
41	102
42	103
43	106
44	107
45	109
46	110
47	114
48	116
49	117
50	118
51	119
52	121
53	122
54	123
55	125
56	126
57	127
58	129
59	131
60	133
61	135
62	136

cp's OEIS Frontend

A210732 Numbers n for which sigma*(n)=sigma*(x)+sigma*(y), where n=x+y and sigma*(n) is the sum of the anti-divisors of n.

Table of values

List of values

A210732 Numbers n for which sigma(n)=sigma(x)+sigma(y), where n=x+y and sigma(n) is the sum of the anti-divisors of n.

n	a(n)
3	6
4	9
5	15
6	18
7	21
8	24
9	27
10	30
11	31
12	33
13	37
14	39
15	43
16	44
17	46
18	47
19	53
20	56
21	57
22	62
23	65
24	66
25	70
26	73
27	74
28	75
29	76
30	78
31	81
32	83
33	86
34	88
35	90
36	91
37	92
38	93
39	97
40	99
41	102
42	103
43	106
44	107
45	109
46	110
47	114
48	116
49	117
50	118
51	119
52	121
53	122
54	123
55	125
56	126
57	127
58	129
59	131
60	133
61	135
62	136