21612008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{245591}}^1$

素因数の和:245608

約数の個数: 16

約数和(自身を含む): 44206560

約数和(自身を除く): 22594552

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 245591, 491182, 982364, 1964728, 2701501, 5403002, 10806004, 21612008]

約数ペア:

[(1, 21612008), (2, 10806004), (4, 5403002), (8, 2701501), (11, 1964728), (22, 982364), (44, 491182), (88, 245591)]