518017491

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{270223}}^1$

素因数の和:270303

約数の個数: 16

約数和(自身を含む): 778245120

約数和(自身を除く): 260227629

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 270223, 810669, 2432007, 7296021, 19185833, 57557499, 172672497, 518017491]

約数ペア:

[(1, 518017491), (3, 172672497), (9, 57557499), (27, 19185833), (71, 7296021), (213, 2432007), (639, 810669), (1917, 270223)]