81668559

素因数分解:

$3^1\times 7^1\times {\mathrm{1657}}^1\times {\mathrm{2347}}^1$

素因数の和:4014

約数の個数: 16

約数和(自身を含む): 124575488

約数和(自身を除く): 42906929

約数列:

[1, 3, 7, 21, 1657, 2347, 4971, 7041, 11599, 16429, 34797, 49287, 3888979, 11666937, 27222853, 81668559]

約数ペア:

[(1, 81668559), (3, 27222853), (7, 11666937), (21, 3888979), (1657, 49287), (2347, 34797), (4971, 16429), (7041, 11599)]