20161812321

素因数分解:

$3^2\times 7^1\times {\mathrm{320028767}}^1$

素因数の和:320028780

約数の個数: 12

約数和(自身を含む): 33282991872

約数和(自身を除く): 13121179551

約数列:

[1, 3, 7, 9, 21, 63, 320028767, 960086301, 2240201369, 2880258903, 6720604107, 20161812321]

約数ペア:

[(1, 20161812321), (3, 6720604107), (7, 2880258903), (9, 2240201369), (21, 960086301), (63, 320028767)]