21792243

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^2\times {\mathrm{131}}^1$

素因数の和:287

約数の個数: 24

約数和(自身を含む): 32395968

約数和(自身を除く): 10603725

約数列:

[1, 3, 11, 33, 71, 131, 213, 393, 781, 1441, 2343, 4323, 5041, 9301, 15123, 27903, 55451, 102311, 166353, 306933, 660371, 1981113, 7264081, 21792243]

約数ペア:

[(1, 21792243), (3, 7264081), (11, 1981113), (33, 660371), (71, 306933), (131, 166353), (213, 102311), (393, 55451), (781, 27903), (1441, 15123), (2343, 9301), (4323, 5041)]