2780897

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:165

約数の個数: 24

約数和(自身を含む): 3556800

約数和(自身を除く): 775903

約数列:

[1, 7, 19, 29, 49, 103, 133, 203, 551, 721, 931, 1421, 1957, 2987, 3857, 5047, 13699, 20909, 26999, 56753, 95893, 146363, 397271, 2780897]

約数ペア:

[(1, 2780897), (7, 397271), (19, 146363), (29, 95893), (49, 56753), (103, 26999), (133, 20909), (203, 13699), (551, 5047), (721, 3857), (931, 2987), (1421, 1957)]