81964467

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{77839}}^1$

素因数の和:77864

約数の個数: 20

約数和(自身を含む): 131860960

約数和(自身を除く): 49896493

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 77839, 233517, 700551, 1011907, 2101653, 3035721, 6304959, 9107163, 27321489, 81964467]

約数ペア:

[(1, 81964467), (3, 27321489), (9, 9107163), (13, 6304959), (27, 3035721), (39, 2101653), (81, 1011907), (117, 700551), (351, 233517), (1053, 77839)]