21963393

素因数分解:

$3^4\times {\mathrm{263}}^1\times {\mathrm{1031}}^1$

素因数の和:1306

約数の個数: 20

約数和(自身を含む): 32966208

約数和(自身を除く): 11002815

約数列:

[1, 3, 9, 27, 81, 263, 789, 1031, 2367, 3093, 7101, 9279, 21303, 27837, 83511, 271153, 813459, 2440377, 7321131, 21963393]

約数ペア:

[(1, 21963393), (3, 7321131), (9, 2440377), (27, 813459), (81, 271153), (263, 83511), (789, 27837), (1031, 21303), (2367, 9279), (3093, 7101)]