18891027

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{263}}^1\times {\mathrm{347}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 28664064

約数和(自身を除く): 9773037

約数列:

[1, 3, 9, 23, 69, 207, 263, 347, 789, 1041, 2367, 3123, 6049, 7981, 18147, 23943, 54441, 71829, 91261, 273783, 821349, 2099003, 6297009, 18891027]

約数ペア:

[(1, 18891027), (3, 6297009), (9, 2099003), (23, 821349), (69, 273783), (207, 91261), (263, 71829), (347, 54441), (789, 23943), (1041, 18147), (2367, 7981), (3123, 6049)]