21051074

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13477}}^1$

素因数の和:13561

約数の個数: 16

約数和(自身を含む): 34934976

約数和(自身を除く): 13883902

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13477, 26954, 148247, 296494, 956867, 1913734, 10525537, 21051074]

約数ペア:

[(1, 21051074), (2, 10525537), (11, 1913734), (22, 956867), (71, 296494), (142, 148247), (781, 26954), (1562, 13477)]