A385139 - cp's OEIS frontend

A385139 The sum of divisors d of n such that n/d has exponents in its prime factorization that are all powers of 2 (A138302).

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	14
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	29
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	56
25	31
26	42
27	39
28	56
29	30
30	72
31	32
32	58
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	84
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	116
49	57
50	93
51	72
52	98
53	54
54	117
55	72
56	112
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	116
65	84
66	144

[1, 3, 4, 7, 6, 12, 8, 14, 13, 18, 12, 28, 14, 24, 24, 29, 18, 39, 20, 42, 32, 36, 24, 56, 31, 42, 39, 56, 30, 72, 32, 58, 48, 54, 48, 91, 38, 60, 56, 84, 42, 96, 44, 84, 78, 72, 48, 116, 57, 93, 72, 98, 54, 117, 72, 112, 80, 90, 60, 168, 62, 96, 104, 116, 84, 144]

cp's OEIS Frontend

A385139 The sum of divisors d of n such that n/d has exponents in its prime factorization that are all powers of 2 (A138302).

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	14
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	29
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	56
25	31
26	42
27	39
28	56
29	30
30	72
31	32
32	58
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	84
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	116
49	57
50	93
51	72
52	98
53	54
54	117
55	72
56	112
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	116
65	84
66	144

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	14
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	29
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	56
25	31
26	42
27	39
28	56
29	30
30	72
31	32
32	58
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	84
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	116
49	57
50	93
51	72
52	98
53	54
54	117
55	72
56	112
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	116
65	84
66	144

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	14
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	29
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	56
25	31
26	42
27	39
28	56
29	30
30	72
31	32
32	58
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	84
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	116
49	57
50	93
51	72
52	98
53	54
54	117
55	72
56	112
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	116
65	84
66	144