81257211

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{11833}}^1$

素因数の和:11955

約数の個数: 24

約数和(自身を含む): 135380960

約数和(自身を除く): 54123749

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 6867, 11833, 35499, 82831, 106497, 248493, 745479, 1289797, 3869391, 9028579, 11608173, 27085737, 81257211]

約数ペア:

[(1, 81257211), (3, 27085737), (7, 11608173), (9, 9028579), (21, 3869391), (63, 1289797), (109, 745479), (327, 248493), (763, 106497), (981, 82831), (2289, 35499), (6867, 11833)]