21309426

素因数分解:

$2^1\times 3^3\times {\mathrm{394619}}^1$

素因数の和:394630

約数の個数: 16

約数和(自身を含む): 47354400

約数和(自身を除く): 26044974

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 394619, 789238, 1183857, 2367714, 3551571, 7103142, 10654713, 21309426]

約数ペア:

[(1, 21309426), (2, 10654713), (3, 7103142), (6, 3551571), (9, 2367714), (18, 1183857), (27, 789238), (54, 394619)]