81990916

素因数分解:

$2^2\times 7^2\times {\mathrm{418321}}^1$

素因数の和:418339

約数の個数: 18

約数和(自身を含む): 166910478

約数和(自身を除く): 84919562

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 418321, 836642, 1673284, 2928247, 5856494, 11712988, 20497729, 40995458, 81990916]

約数ペア:

[(1, 81990916), (2, 40995458), (4, 20497729), (7, 11712988), (14, 5856494), (28, 2928247), (49, 1673284), (98, 836642), (196, 418321)]