20512971351

素因数分解:

$3^2\times {\mathrm{241981}}^1\times {\mathrm{9419}}^1$

素因数の和:251406

約数の個数: 12

約数和(自身を含む): 29633115720

約数和(自身を除く): 9120144369

約数列:

[1, 3, 9, 9419, 28257, 84771, 241981, 725943, 2177829, 2279219039, 6837657117, 20512971351]

約数ペア:

[(1, 20512971351), (3, 6837657117), (9, 2279219039), (9419, 2177829), (28257, 725943), (84771, 241981)]