25560909

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 43130880

約数和(自身を除く): 17569971

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 107, 127, 171, 209, 321, 381, 627, 963, 1143, 1177, 1397, 1881, 2033, 2413, 3531, 4191, 6099, 7239, 10593, 12573, 13589, 18297, 21717, 22363, 26543, 40767, 67089, 79629, 122301, 149479, 201267, 238887, 258191, 448437, 774573, 1345311, 2323719, 2840101, 8520303, 25560909]

約数ペア:

[(1, 25560909), (3, 8520303), (9, 2840101), (11, 2323719), (19, 1345311), (33, 774573), (57, 448437), (99, 258191), (107, 238887), (127, 201267), (171, 149479), (209, 122301), (321, 79629), (381, 67089), (627, 40767), (963, 26543), (1143, 22363), (1177, 21717), (1397, 18297), (1881, 13589), (2033, 12573), (2413, 10593), (3531, 7239), (4191, 6099)]