21077147

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3797}}^1$

素因数の和:3878

約数の個数: 16

約数和(自身を含む): 26373312

約数和(自身を除く): 5296165

約数列:

[1, 7, 13, 61, 91, 427, 793, 3797, 5551, 26579, 49361, 231617, 345527, 1621319, 3011021, 21077147]

約数ペア:

[(1, 21077147), (7, 3011021), (13, 1621319), (61, 345527), (91, 231617), (427, 49361), (793, 26579), (3797, 5551)]