209550861

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:403

約数の個数: 64

約数和(自身を含む): 353687040

約数和(自身を除く): 144136179

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 101, 117, 207, 257, 299, 303, 351, 621, 771, 897, 909, 1313, 2313, 2323, 2691, 2727, 3341, 3939, 5911, 6939, 6969, 8073, 10023, 11817, 17733, 20907, 25957, 30069, 30199, 35451, 53199, 62721, 76843, 77871, 90207, 90597, 159597, 230529, 233613, 271791, 337441, 597011, 691587, 700839, 815373, 1012323, 1791033, 2074761, 3036969, 5373099, 7761143, 9110907, 16119297, 23283429, 69850287, 209550861]

約数ペア:

[(1, 209550861), (3, 69850287), (9, 23283429), (13, 16119297), (23, 9110907), (27, 7761143), (39, 5373099), (69, 3036969), (101, 2074761), (117, 1791033), (207, 1012323), (257, 815373), (299, 700839), (303, 691587), (351, 597011), (621, 337441), (771, 271791), (897, 233613), (909, 230529), (1313, 159597), (2313, 90597), (2323, 90207), (2691, 77871), (2727, 76843), (3341, 62721), (3939, 53199), (5911, 35451), (6939, 30199), (6969, 30069), (8073, 25957), (10023, 20907), (11817, 17733)]