80940209

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{86939}}^1$

素因数の和:86972

約数の個数: 12

約数和(自身を含む): 99111600

約数和(自身を除く): 18171391

約数列:

[1, 7, 19, 49, 133, 931, 86939, 608573, 1651841, 4260011, 11562887, 80940209]

約数ペア:

[(1, 80940209), (7, 11562887), (19, 4260011), (49, 1651841), (133, 608573), (931, 86939)]