21157112

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{9151}}^1$

素因数の和:9191

約数の個数: 24

約数和(自身を含む): 42144960

約数和(自身を除く): 20987848

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 289, 578, 1156, 2312, 9151, 18302, 36604, 73208, 155567, 311134, 622268, 1244536, 2644639, 5289278, 10578556, 21157112]

約数ペア:

[(1, 21157112), (2, 10578556), (4, 5289278), (8, 2644639), (17, 1244536), (34, 622268), (68, 311134), (136, 155567), (289, 73208), (578, 36604), (1156, 18302), (2312, 9151)]