21085438

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13499}}^1$

素因数の和:13583

約数の個数: 16

約数和(自身を含む): 34992000

約数和(自身を除く): 13906562

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13499, 26998, 148489, 296978, 958429, 1916858, 10542719, 21085438]

約数ペア:

[(1, 21085438), (2, 10542719), (11, 1916858), (22, 958429), (71, 296978), (142, 148489), (781, 26998), (1562, 13499)]