81847787

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 97962480

約数和(自身を除く): 16114693

約数列:

[1, 7, 49, 61, 139, 197, 427, 973, 1379, 2989, 6811, 8479, 9653, 12017, 27383, 59353, 84119, 191681, 415471, 588833, 1341767, 1670363, 11692541, 81847787]

約数ペア:

[(1, 81847787), (7, 11692541), (49, 1670363), (61, 1341767), (139, 588833), (197, 415471), (427, 191681), (973, 84119), (1379, 59353), (2989, 27383), (6811, 12017), (8479, 9653)]