81243813

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{12853}}^1$

素因数の和:12913

約数の個数: 24

約数和(自身を含む): 128951328

約数和(自身を除く): 47707515

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 6321, 12853, 38559, 89971, 269913, 552679, 629797, 1658037, 1889391, 3868753, 11606259, 27081271, 81243813]

約数ペア:

[(1, 81243813), (3, 27081271), (7, 11606259), (21, 3868753), (43, 1889391), (49, 1658037), (129, 629797), (147, 552679), (301, 269913), (903, 89971), (2107, 38559), (6321, 12853)]