20212031

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5479}}^1$

素因数の和:5534

約数の個数: 16

約数和(自身を含む): 25251840

約数和(自身を除く): 5039809

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5479, 38353, 93143, 169849, 652001, 1188943, 2887433, 20212031]

約数ペア:

[(1, 20212031), (7, 2887433), (17, 1188943), (31, 652001), (119, 169849), (217, 93143), (527, 38353), (3689, 5479)]