81319791

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{203809}}^1$

素因数の和:203838

約数の個数: 16

約数和(自身を含む): 130438400

約数和(自身を除く): 49118609

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 203809, 611427, 1426663, 3872371, 4279989, 11617113, 27106597, 81319791]

約数ペア:

[(1, 81319791), (3, 27106597), (7, 11617113), (19, 4279989), (21, 3872371), (57, 1426663), (133, 611427), (399, 203809)]