31381389

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{4397}}^1$

素因数の和:4477

約数の個数: 24

約数和(自身を含む): 49627032

約数和(自身を除く): 18245643

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 4397, 7137, 13191, 39573, 57161, 171483, 268217, 514449, 804651, 2413953, 3486821, 10460463, 31381389]

約数ペア:

[(1, 31381389), (3, 10460463), (9, 3486821), (13, 2413953), (39, 804651), (61, 514449), (117, 268217), (183, 171483), (549, 57161), (793, 39573), (2379, 13191), (4397, 7137)]