A008475 - cp's OEIS frontend

A008475 If n = Product (p_j^k_j) then a(n) = Sum (p_j^k_j) (a(1) = 0 by convention).

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

[0, 2, 3, 4, 5, 5, 7, 8, 9, 7, 11, 7, 13, 9, 8, 16, 17, 11, 19, 9, 10, 13, 23, 11, 25, 15, 27, 11, 29, 10, 31, 32, 14, 19, 12, 13, 37, 21, 16, 13, 41, 12, 43, 15, 14, 25, 47, 19, 49, 27, 20, 17, 53, 29, 16, 15, 22, 31, 59, 12, 61, 33, 16, 64, 18, 16, 67, 21, 26, 14, 71, 17, 73]

cp's OEIS Frontend

A008475 If n = Product (p_j^k_j) then a(n) = Sum (p_j^k_j) (a(1) = 0 by convention).

Table of values

List of values

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

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

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