19991178

素因数分解:

$2^1\times 3^3\times {\mathrm{370207}}^1$

素因数の和:370218

約数の個数: 16

約数和(自身を含む): 44424960

約数和(自身を除く): 24433782

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 370207, 740414, 1110621, 2221242, 3331863, 6663726, 9995589, 19991178]

約数ペア:

[(1, 19991178), (2, 9995589), (3, 6663726), (6, 3331863), (9, 2221242), (18, 1110621), (27, 740414), (54, 370207)]