21061491

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{27749}}^1$

素因数の和:27786

約数の個数: 16

約数和(自身を含む): 31968000

約数和(自身を除く): 10906509

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 27749, 83247, 305239, 638227, 915717, 1914681, 7020497, 21061491]

約数ペア:

[(1, 21061491), (3, 7020497), (11, 1914681), (23, 915717), (33, 638227), (69, 305239), (253, 83247), (759, 27749)]