19685187

素因数分解:

$3^7\times {\mathrm{9001}}^1$

素因数の和:9022

約数の個数: 16

約数和(自身を含む): 29526560

約数和(自身を除く): 9841373

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 9001, 27003, 81009, 243027, 729081, 2187243, 6561729, 19685187]

約数ペア:

[(1, 19685187), (3, 6561729), (9, 2187243), (27, 729081), (81, 243027), (243, 81009), (729, 27003), (2187, 9001)]