18411993

素因数分解:

$3^2\times {\mathrm{41}}^2\times {\mathrm{1217}}^1$

素因数の和:1305

約数の個数: 18

約数和(自身を含む): 27281982

約数和(自身を除く): 8869989

約数列:

[1, 3, 9, 41, 123, 369, 1217, 1681, 3651, 5043, 10953, 15129, 49897, 149691, 449073, 2045777, 6137331, 18411993]

約数ペア:

[(1, 18411993), (3, 6137331), (9, 2045777), (41, 449073), (123, 149691), (369, 49897), (1217, 15129), (1681, 10953), (3651, 5043)]