19892081

素因数分解:

${\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:392

約数の個数: 16

約数和(自身を含む): 22259328

約数和(自身を除く): 2367247

約数列:

[1, 11, 97, 103, 181, 1067, 1133, 1991, 9991, 17557, 18643, 109901, 193127, 205073, 1808371, 19892081]

約数ペア:

[(1, 19892081), (11, 1808371), (97, 205073), (103, 193127), (181, 109901), (1067, 18643), (1133, 17557), (1991, 9991)]