18820377

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{313}}^1$

素因数の和:470

約数の個数: 32

約数和(自身を含む): 29842560

約数和(自身を除く): 11022183

約数列:

[1, 3, 9, 17, 27, 51, 131, 153, 313, 393, 459, 939, 1179, 2227, 2817, 3537, 5321, 6681, 8451, 15963, 20043, 41003, 47889, 60129, 123009, 143667, 369027, 697051, 1107081, 2091153, 6273459, 18820377]

約数ペア:

[(1, 18820377), (3, 6273459), (9, 2091153), (17, 1107081), (27, 697051), (51, 369027), (131, 143667), (153, 123009), (313, 60129), (393, 47889), (459, 41003), (939, 20043), (1179, 15963), (2227, 8451), (2817, 6681), (3537, 5321)]