19800319

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{241}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 25233824

約数和(自身を除く): 5433505

約数列:

[1, 7, 11, 77, 97, 121, 241, 679, 847, 1067, 1687, 2651, 7469, 11737, 18557, 23377, 29161, 82159, 163639, 204127, 257147, 1800029, 2828617, 19800319]

約数ペア:

[(1, 19800319), (7, 2828617), (11, 1800029), (77, 257147), (97, 204127), (121, 163639), (241, 82159), (679, 29161), (847, 23377), (1067, 18557), (1687, 11737), (2651, 7469)]