21117459

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9013}}^1$

素因数の和:9098

約数の個数: 16

約数和(自身を含む): 31152384

約数和(自身を除く): 10034925

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 9013, 27039, 99143, 297429, 639923, 1919769, 7039153, 21117459]

約数ペア:

[(1, 21117459), (3, 7039153), (11, 1919769), (33, 639923), (71, 297429), (213, 99143), (781, 27039), (2343, 9013)]