19389643

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 24738000

約数和(自身を除く): 5348357

約数列:

[1, 7, 13, 49, 61, 91, 427, 499, 637, 793, 2989, 3493, 5551, 6487, 24451, 30439, 38857, 45409, 213073, 317863, 395707, 1491511, 2769949, 19389643]

約数ペア:

[(1, 19389643), (7, 2769949), (13, 1491511), (49, 395707), (61, 317863), (91, 213073), (427, 45409), (499, 38857), (637, 30439), (793, 24451), (2989, 6487), (3493, 5551)]