20605779

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{4861}}^1$

素因数の和:5027

約数の個数: 16

約数和(自身を含む): 30727840

約数和(自身を除く): 10122061

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 4861, 14583, 43749, 131247, 763177, 2289531, 6868593, 20605779]

約数ペア:

[(1, 20605779), (3, 6868593), (9, 2289531), (27, 763177), (157, 131247), (471, 43749), (1413, 14583), (4239, 4861)]