18780939

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{313}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 27920880

約数和(自身を除く): 9139941

約数列:

[1, 3, 9, 59, 113, 177, 313, 339, 531, 939, 1017, 2817, 6667, 18467, 20001, 35369, 55401, 60003, 106107, 166203, 318321, 2086771, 6260313, 18780939]

約数ペア:

[(1, 18780939), (3, 6260313), (9, 2086771), (59, 318321), (113, 166203), (177, 106107), (313, 60003), (339, 55401), (531, 35369), (939, 20001), (1017, 18467), (2817, 6667)]