11981818

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{4441}}^1$

素因数の和:4533

約数の個数: 16

約数和(自身を含む): 19189440

約数和(自身を除く): 7207622

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 4441, 8882, 84379, 168758, 315311, 630622, 5990909, 11981818]

約数ペア:

[(1, 11981818), (2, 5990909), (19, 630622), (38, 315311), (71, 168758), (142, 84379), (1349, 8882), (2698, 4441)]