20406399

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{27539}}^1$

素因数の和:27574

約数の個数: 16

約数和(自身を含む): 30844800

約数和(自身を除く): 10438401

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 27539, 82617, 358007, 523241, 1074021, 1569723, 6802133, 20406399]

約数ペア:

[(1, 20406399), (3, 6802133), (13, 1569723), (19, 1074021), (39, 523241), (57, 358007), (247, 82617), (741, 27539)]