21080379

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{673}}^1$

素因数の和:926

約数の個数: 16

約数和(自身を含む): 28825632

約数和(自身を除く): 7745253

約数列:

[1, 3, 53, 159, 197, 591, 673, 2019, 10441, 31323, 35669, 107007, 132581, 397743, 7026793, 21080379]

約数ペア:

[(1, 21080379), (3, 7026793), (53, 397743), (159, 132581), (197, 107007), (591, 35669), (673, 31323), (2019, 10441)]