28428543

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 51072000

約数和(自身を除く): 22643457

約数列:

[1, 3, 9, 11, 13, 27, 33, 37, 39, 99, 111, 117, 143, 199, 297, 333, 351, 407, 429, 481, 597, 999, 1221, 1287, 1443, 1791, 2189, 2587, 3663, 3861, 4329, 5291, 5373, 6567, 7363, 7761, 10989, 12987, 15873, 19701, 22089, 23283, 28457, 47619, 59103, 66267, 69849, 80993, 85371, 95719, 142857, 198801, 242979, 256113, 287157, 728937, 768339, 861471, 1052909, 2186811, 2584413, 3158727, 9476181, 28428543]

約数ペア:

[(1, 28428543), (3, 9476181), (9, 3158727), (11, 2584413), (13, 2186811), (27, 1052909), (33, 861471), (37, 768339), (39, 728937), (99, 287157), (111, 256113), (117, 242979), (143, 198801), (199, 142857), (297, 95719), (333, 85371), (351, 80993), (407, 69849), (429, 66267), (481, 59103), (597, 47619), (999, 28457), (1221, 23283), (1287, 22089), (1443, 19701), (1791, 15873), (2189, 12987), (2587, 10989), (3663, 7761), (3861, 7363), (4329, 6567), (5291, 5373)]