21349197

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{10009}}^1$

素因数の和:10097

約数の個数: 16

約数和(自身を含む): 32032000

約数和(自身を除く): 10682803

約数列:

[1, 3, 9, 27, 79, 237, 711, 2133, 10009, 30027, 90081, 270243, 790711, 2372133, 7116399, 21349197]

約数ペア:

[(1, 21349197), (3, 7116399), (9, 2372133), (27, 790711), (79, 270243), (237, 90081), (711, 30027), (2133, 10009)]