2138787

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1997}}^1$

素因数の和:2027

約数の個数: 24

約数和(自身を含む): 3740256

約数和(自身を除く): 1601469

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 1997, 5991, 13979, 17973, 33949, 41937, 101847, 125811, 237643, 305541, 712929, 2138787]

約数ペア:

[(1, 2138787), (3, 712929), (7, 305541), (9, 237643), (17, 125811), (21, 101847), (51, 41937), (63, 33949), (119, 17973), (153, 13979), (357, 5991), (1071, 1997)]