18131487

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:475

約数の個数: 24

約数和(自身を含む): 26812800

約数和(自身を除く): 8681313

約数列:

[1, 3, 11, 33, 121, 199, 251, 363, 597, 753, 2189, 2761, 6567, 8283, 24079, 30371, 49949, 72237, 91113, 149847, 549439, 1648317, 6043829, 18131487]

約数ペア:

[(1, 18131487), (3, 6043829), (11, 1648317), (33, 549439), (121, 149847), (199, 91113), (251, 72237), (363, 49949), (597, 30371), (753, 24079), (2189, 8283), (2761, 6567)]