20988627

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{27653}}^1$

素因数の和:27690

約数の個数: 16

約数和(自身を含む): 31857408

約数和(自身を除く): 10868781

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 27653, 82959, 304183, 636019, 912549, 1908057, 6996209, 20988627]

約数ペア:

[(1, 20988627), (3, 6996209), (11, 1908057), (23, 912549), (33, 636019), (69, 304183), (253, 82959), (759, 27653)]