81439918

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{252919}}^1$

素因数の和:252951

約数の個数: 16

約数和(自身を含む): 145681920

約数和(自身を除く): 64242002

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 252919, 505838, 1770433, 3540866, 5817137, 11634274, 40719959, 81439918]

約数ペア:

[(1, 81439918), (2, 40719959), (7, 11634274), (14, 5817137), (23, 3540866), (46, 1770433), (161, 505838), (322, 252919)]