21039999

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{613}}^1\times {\mathrm{673}}^1$

素因数の和:1306

約数の個数: 16

約数和(自身を含む): 29796192

約数和(自身を除く): 8756193

約数列:

[1, 3, 17, 51, 613, 673, 1839, 2019, 10421, 11441, 31263, 34323, 412549, 1237647, 7013333, 21039999]

約数ペア:

[(1, 21039999), (3, 7013333), (17, 1237647), (51, 412549), (613, 34323), (673, 31263), (1839, 11441), (2019, 10421)]