2989891009

素因数分解:

$7^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1\times {\mathrm{21521}}^1$

素因数の和:21840

約数の個数: 16

約数和(自身を含む): 3471068160

約数和(自身を除く): 481177151

約数列:

[1, 7, 89, 223, 623, 1561, 19847, 21521, 138929, 150647, 1915369, 4799183, 13407583, 33594281, 427127287, 2989891009]

約数ペア:

[(1, 2989891009), (7, 427127287), (89, 33594281), (223, 13407583), (623, 4799183), (1561, 1915369), (19847, 150647), (21521, 138929)]