18877989

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{11257}}^1$

素因数の和:11316

約数の個数: 16

約数和(自身を含む): 27739712

約数和(自身を除く): 8861723

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 11257, 33771, 146341, 439023, 484051, 1452153, 6292663, 18877989]

約数ペア:

[(1, 18877989), (3, 6292663), (13, 1452153), (39, 484051), (43, 439023), (129, 146341), (559, 33771), (1677, 11257)]