247689

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:121

約数の個数: 24

約数和(自身を含む): 404040

約数和(自身を除く): 156351

約数列:

[1, 3, 9, 13, 29, 39, 73, 87, 117, 219, 261, 377, 657, 949, 1131, 2117, 2847, 3393, 6351, 8541, 19053, 27521, 82563, 247689]

約数ペア:

[(1, 247689), (3, 82563), (9, 27521), (13, 19053), (29, 8541), (39, 6351), (73, 3393), (87, 2847), (117, 2117), (219, 1131), (261, 949), (377, 657)]