208530909

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:295

約数の個数: 64

約数和(自身を含む): 342144000

約数和(自身を除く): 133613091

約数列:

[1, 3, 9, 19, 27, 29, 57, 87, 107, 131, 171, 261, 321, 393, 513, 551, 783, 963, 1179, 1653, 2033, 2489, 2889, 3103, 3537, 3799, 4959, 6099, 7467, 9309, 11397, 14017, 14877, 18297, 22401, 27927, 34191, 42051, 54891, 58957, 67203, 72181, 83781, 102573, 126153, 176871, 216543, 266323, 378459, 406493, 530613, 649629, 798969, 1219479, 1591839, 1948887, 2396907, 3658437, 7190721, 7723367, 10975311, 23170101, 69510303, 208530909]

約数ペア:

[(1, 208530909), (3, 69510303), (9, 23170101), (19, 10975311), (27, 7723367), (29, 7190721), (57, 3658437), (87, 2396907), (107, 1948887), (131, 1591839), (171, 1219479), (261, 798969), (321, 649629), (393, 530613), (513, 406493), (551, 378459), (783, 266323), (963, 216543), (1179, 176871), (1653, 126153), (2033, 102573), (2489, 83781), (2889, 72181), (3103, 67203), (3537, 58957), (3799, 54891), (4959, 42051), (6099, 34191), (7467, 27927), (9309, 22401), (11397, 18297), (14017, 14877)]