21405288

素因数分解:

$2^3\times 3^1\times {\mathrm{891887}}^1$

素因数の和:891896

約数の個数: 16

約数和(自身を含む): 53513280

約数和(自身を除く): 32107992

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 891887, 1783774, 2675661, 3567548, 5351322, 7135096, 10702644, 21405288]

約数ペア:

[(1, 21405288), (2, 10702644), (3, 7135096), (4, 5351322), (6, 3567548), (8, 2675661), (12, 1783774), (24, 891887)]