20181511

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{1217}}^1$

素因数の和:1350

約数の個数: 16

約数和(自身を含む): 24321024

約数和(自身を除く): 4139513

約数列:

[1, 7, 23, 103, 161, 721, 1217, 2369, 8519, 16583, 27991, 125351, 195937, 877457, 2883073, 20181511]

約数ペア:

[(1, 20181511), (7, 2883073), (23, 877457), (103, 195937), (161, 125351), (721, 27991), (1217, 16583), (2369, 8519)]