19921707

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{18919}}^1$

素因数の和:18944

約数の個数: 20

約数和(自身を含む): 32050480

約数和(自身を除く): 12128773

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 18919, 56757, 170271, 245947, 510813, 737841, 1532439, 2213523, 6640569, 19921707]

約数ペア:

[(1, 19921707), (3, 6640569), (9, 2213523), (13, 1532439), (27, 737841), (39, 510813), (81, 245947), (117, 170271), (351, 56757), (1053, 18919)]