21791704

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{247633}}^1$

素因数の和:247650

約数の個数: 16

約数和(自身を含む): 44574120

約数和(自身を除く): 22782416

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 247633, 495266, 990532, 1981064, 2723963, 5447926, 10895852, 21791704]

約数ペア:

[(1, 21791704), (2, 10895852), (4, 5447926), (8, 2723963), (11, 1981064), (22, 990532), (44, 495266), (88, 247633)]