19382391

素因数分解:

$3^2\times 7^2\times {\mathrm{43951}}^1$

素因数の和:43971

約数の個数: 18

約数和(自身を含む): 32568432

約数和(自身を除く): 13186041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43951, 131853, 307657, 395559, 922971, 2153599, 2768913, 6460797, 19382391]

約数ペア:

[(1, 19382391), (3, 6460797), (7, 2768913), (9, 2153599), (21, 922971), (49, 395559), (63, 307657), (147, 131853), (441, 43951)]