20388389

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{2347}}^1$

素因数の和:2444

約数の個数: 16

約数和(自身を含む): 25020288

約数和(自身を除く): 4631899

約数列:

[1, 7, 17, 73, 119, 511, 1241, 2347, 8687, 16429, 39899, 171331, 279293, 1199317, 2912627, 20388389]

約数ペア:

[(1, 20388389), (7, 2912627), (17, 1199317), (73, 279293), (119, 171331), (511, 39899), (1241, 16429), (2347, 8687)]