20811147

素因数分解:

$3^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{2423}}^1$

素因数の和:2842

約数の個数: 16

約数和(自身を含む): 31802880

約数和(自身を除く): 10991733

約数列:

[1, 3, 7, 21, 409, 1227, 2423, 2863, 7269, 8589, 16961, 50883, 991007, 2973021, 6937049, 20811147]

約数ペア:

[(1, 20811147), (3, 6937049), (7, 2973021), (21, 991007), (409, 50883), (1227, 16961), (2423, 8589), (2863, 7269)]