21020289

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{1543}}^1$

素因数の和:1804

約数の個数: 16

約数和(自身を含む): 29644800

約数和(自身を除く): 8624511

約数列:

[1, 3, 19, 57, 239, 717, 1543, 4541, 4629, 13623, 29317, 87951, 368777, 1106331, 7006763, 21020289]

約数ペア:

[(1, 21020289), (3, 7006763), (19, 1106331), (57, 368777), (239, 87951), (717, 29317), (1543, 13623), (4541, 4629)]