261369087

素因数分解:

$3^1\times 7^3\times {\mathrm{254003}}^1$

素因数の和:254027

約数の個数: 16

約数和(自身を含む): 406406400

約数和(自身を除く): 145037313

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 254003, 762009, 1778021, 5334063, 12446147, 37338441, 87123029, 261369087]

約数ペア:

[(1, 261369087), (3, 87123029), (7, 37338441), (21, 12446147), (49, 5334063), (147, 1778021), (343, 762009), (1029, 254003)]