20412891

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10957}}^1$

素因数の和:10992

約数の個数: 20

約数和(自身を含む): 31822032

約数和(自身を除く): 11409141

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10957, 32871, 98613, 252011, 295839, 756033, 887517, 2268099, 6804297, 20412891]

約数ペア:

[(1, 20412891), (3, 6804297), (9, 2268099), (23, 887517), (27, 756033), (69, 295839), (81, 252011), (207, 98613), (621, 32871), (1863, 10957)]