21520664

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{244553}}^1$

素因数の和:244570

約数の個数: 16

約数和(自身を含む): 44019720

約数和(自身を除く): 22499056

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 244553, 489106, 978212, 1956424, 2690083, 5380166, 10760332, 21520664]

約数ペア:

[(1, 21520664), (2, 10760332), (4, 5380166), (8, 2690083), (11, 1956424), (22, 978212), (44, 489106), (88, 244553)]