21055707

素因数分解:

$3^6\times {\mathrm{17}}^1\times {\mathrm{1699}}^1$

素因数の和:1734

約数の個数: 28

約数和(自身を含む): 33445800

約数和(自身を除く): 12390093

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 729, 1377, 1699, 4131, 5097, 12393, 15291, 28883, 45873, 86649, 137619, 259947, 412857, 779841, 1238571, 2339523, 7018569, 21055707]

約数ペア:

[(1, 21055707), (3, 7018569), (9, 2339523), (17, 1238571), (27, 779841), (51, 412857), (81, 259947), (153, 137619), (243, 86649), (459, 45873), (729, 28883), (1377, 15291), (1699, 12393), (4131, 5097)]