20405319

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{839}}^1$

素因数の和:931

約数の個数: 24

約数和(自身を含む): 30387840

約数和(自身を除く): 9982521

約数列:

[1, 3, 11, 33, 67, 121, 201, 363, 737, 839, 2211, 2517, 8107, 9229, 24321, 27687, 56213, 101519, 168639, 304557, 618343, 1855029, 6801773, 20405319]

約数ペア:

[(1, 20405319), (3, 6801773), (11, 1855029), (33, 618343), (67, 304557), (121, 168639), (201, 101519), (363, 56213), (737, 27687), (839, 24321), (2211, 9229), (2517, 8107)]