17820929

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1559}}^1$

素因数の和:1660

約数の個数: 16

約数和(自身を含む): 21565440

約数和(自身を除く): 3744511

約数列:

[1, 7, 23, 71, 161, 497, 1559, 1633, 10913, 11431, 35857, 110689, 250999, 774823, 2545847, 17820929]

約数ペア:

[(1, 17820929), (7, 2545847), (23, 774823), (71, 250999), (161, 110689), (497, 35857), (1559, 11431), (1633, 10913)]