638533719

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{5413}}^1$

素因数の和:5696

約数の個数: 32

約数和(自身を含む): 1005704640

約数和(自身を除く): 367170921

約数列:

[1, 3, 9, 17, 27, 51, 153, 257, 459, 771, 2313, 4369, 5413, 6939, 13107, 16239, 39321, 48717, 92021, 117963, 146151, 276063, 828189, 1391141, 2484567, 4173423, 12520269, 23649397, 37560807, 70948191, 212844573, 638533719]

約数ペア:

[(1, 638533719), (3, 212844573), (9, 70948191), (17, 37560807), (27, 23649397), (51, 12520269), (153, 4173423), (257, 2484567), (459, 1391141), (771, 828189), (2313, 276063), (4369, 146151), (5413, 117963), (6939, 92021), (13107, 48717), (16239, 39321)]