19686951

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{30809}}^1$

素因数の和:30886

約数の個数: 12

約数和(自身を含む): 28838160

約数和(自身を除く): 9151209

約数列:

[1, 3, 9, 71, 213, 639, 30809, 92427, 277281, 2187439, 6562317, 19686951]

約数ペア:

[(1, 19686951), (3, 6562317), (9, 2187439), (71, 277281), (213, 92427), (639, 30809)]