19866539

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4373}}^1$

素因数の和:4450

約数の個数: 16

約数和(自身を含む): 25194240

約数和(自身を除く): 5327701

約数列:

[1, 7, 11, 59, 77, 413, 649, 4373, 4543, 30611, 48103, 258007, 336721, 1806049, 2838077, 19866539]

約数ペア:

[(1, 19866539), (7, 2838077), (11, 1806049), (59, 336721), (77, 258007), (413, 48103), (649, 30611), (4373, 4543)]