20740664

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16103}}^1$

素因数の和:16139

約数の個数: 32

約数和(自身を含む): 46379520

約数和(自身を除く): 25638856

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16103, 32206, 64412, 112721, 128824, 225442, 370369, 450884, 740738, 901768, 1481476, 2592583, 2962952, 5185166, 10370332, 20740664]

約数ペア:

[(1, 20740664), (2, 10370332), (4, 5185166), (7, 2962952), (8, 2592583), (14, 1481476), (23, 901768), (28, 740738), (46, 450884), (56, 370369), (92, 225442), (161, 128824), (184, 112721), (322, 64412), (644, 32206), (1288, 16103)]