21406209

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{3361}}^1$

素因数の和:3568

約数の個数: 16

約数和(自身を含む): 31306944

約数和(自身を除く): 9900735

約数列:

[1, 3, 11, 33, 193, 579, 2123, 3361, 6369, 10083, 36971, 110913, 648673, 1946019, 7135403, 21406209]

約数ペア:

[(1, 21406209), (3, 7135403), (11, 1946019), (33, 648673), (193, 110913), (579, 36971), (2123, 10083), (3361, 6369)]