21128367

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1709}}^1$

素因数の和:2042

約数の個数: 16

約数和(自身を含む): 30451680

約数和(自身を除く): 9323313

約数列:

[1, 3, 13, 39, 317, 951, 1709, 4121, 5127, 12363, 22217, 66651, 541753, 1625259, 7042789, 21128367]

約数ペア:

[(1, 21128367), (3, 7042789), (13, 1625259), (39, 541753), (317, 66651), (951, 22217), (1709, 12363), (4121, 5127)]