20985939

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3517}}^1$

素因数の和:3556

約数の個数: 32

約数和(自身を含む): 35461440

約数和(自身を除く): 14475501

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 117, 153, 221, 351, 459, 663, 1989, 3517, 5967, 10551, 31653, 45721, 59789, 94959, 137163, 179367, 411489, 538101, 777257, 1234467, 1614303, 2331771, 6995313, 20985939]

約数ペア:

[(1, 20985939), (3, 6995313), (9, 2331771), (13, 1614303), (17, 1234467), (27, 777257), (39, 538101), (51, 411489), (117, 179367), (153, 137163), (221, 94959), (351, 59789), (459, 45721), (663, 31653), (1989, 10551), (3517, 5967)]