19900686

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{255137}}^1$

素因数の和:255155

約数の個数: 16

約数和(自身を含む): 42863184

約数和(自身を除く): 22962498

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 255137, 510274, 765411, 1530822, 3316781, 6633562, 9950343, 19900686]

約数ペア:

[(1, 19900686), (2, 9950343), (3, 6633562), (6, 3316781), (13, 1530822), (26, 765411), (39, 510274), (78, 255137)]