19715967

素因数分解:

$3^4\times {\mathrm{401}}^1\times {\mathrm{607}}^1$

素因数の和:1020

約数の個数: 20

約数和(自身を含む): 29574336

約数和(自身を除く): 9858369

約数列:

[1, 3, 9, 27, 81, 401, 607, 1203, 1821, 3609, 5463, 10827, 16389, 32481, 49167, 243407, 730221, 2190663, 6571989, 19715967]

約数ペア:

[(1, 19715967), (3, 6571989), (9, 2190663), (27, 730221), (81, 243407), (401, 49167), (607, 32481), (1203, 16389), (1821, 10827), (3609, 5463)]