18923359

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{487}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 24144288

約数和(自身を除く): 5220929

約数列:

[1, 7, 13, 49, 61, 91, 427, 487, 637, 793, 2989, 3409, 5551, 6331, 23863, 29707, 38857, 44317, 207949, 310219, 386191, 1455643, 2703337, 18923359]

約数ペア:

[(1, 18923359), (7, 2703337), (13, 1455643), (49, 386191), (61, 310219), (91, 207949), (427, 44317), (487, 38857), (637, 29707), (793, 23863), (2989, 6331), (3409, 5551)]