81004889

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:777

約数の個数: 24

約数和(自身を含む): 98259336

約数和(自身を除く): 17254447

約数列:

[1, 7, 41, 49, 61, 287, 427, 661, 2009, 2501, 2989, 4627, 17507, 27101, 32389, 40321, 122549, 189707, 282247, 1327949, 1653161, 1975729, 11572127, 81004889]

約数ペア:

[(1, 81004889), (7, 11572127), (41, 1975729), (49, 1653161), (61, 1327949), (287, 282247), (427, 189707), (661, 122549), (2009, 40321), (2501, 32389), (2989, 27101), (4627, 17507)]