20809.0000000

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{1571}}^1$

素因数の和:1617

約数の個数: 16

約数和(自身を含む): 2389440

約数和(自身を除く): 820011

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 1571, 4713, 14139, 42417, 58127, 174381, 523143, 1569429]

約数ペア:

[(1, 1569429), (3, 523143), (9, 174381), (27, 58127), (37, 42417), (111, 14139), (333, 4713), (999, 1571)]