18972290519

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{208486709}}^1$

素因数の和:208486729

約数の個数: 8

約数和(自身を含む): 23350511520

約数和(自身を除く): 4378221001

約数列:

[1, 7, 13, 91, 208486709, 1459406963, 2710327217, 18972290519]

約数ペア:

[(1, 18972290519), (7, 2710327217), (13, 1459406963), (91, 208486709)]