20508584

素因数分解:

$2^3\times {\mathrm{311}}^1\times {\mathrm{8243}}^1$

素因数の和:8560

約数の個数: 16

約数和(自身を含む): 38581920

約数和(自身を除く): 18073336

約数列:

[1, 2, 4, 8, 311, 622, 1244, 2488, 8243, 16486, 32972, 65944, 2563573, 5127146, 10254292, 20508584]

約数ペア:

[(1, 20508584), (2, 10254292), (4, 5127146), (8, 2563573), (311, 65944), (622, 32972), (1244, 16486), (2488, 8243)]