20890244

素因数分解:

$2^2\times {\mathrm{661}}^1\times {\mathrm{7901}}^1$

素因数の和:8566

約数の個数: 12

約数和(自身を含む): 36617868

約数和(自身を除く): 15727624

約数列:

[1, 2, 4, 661, 1322, 2644, 7901, 15802, 31604, 5222561, 10445122, 20890244]

約数ペア:

[(1, 20890244), (2, 10445122), (4, 5222561), (661, 31604), (1322, 15802), (2644, 7901)]