81211782

素因数分解:

$2^1\times 3^1\times {\mathrm{661}}^1\times {\mathrm{20477}}^1$

素因数の和:21143

約数の個数: 16

約数和(自身を含む): 162677232

約数和(自身を除く): 81465450

約数列:

[1, 2, 3, 6, 661, 1322, 1983, 3966, 20477, 40954, 61431, 122862, 13535297, 27070594, 40605891, 81211782]

約数ペア:

[(1, 81211782), (2, 40605891), (3, 27070594), (6, 13535297), (661, 122862), (1322, 61431), (1983, 40954), (3966, 20477)]