19665981

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{809}}^1$

素因数の和:925

約数の個数: 24

約数和(自身を含む): 29610360

約数和(自身を除く): 9944379

約数列:

[1, 3, 9, 37, 73, 111, 219, 333, 657, 809, 2427, 2701, 7281, 8103, 24309, 29933, 59057, 89799, 177171, 269397, 531513, 2185109, 6555327, 19665981]

約数ペア:

[(1, 19665981), (3, 6555327), (9, 2185109), (37, 531513), (73, 269397), (111, 177171), (219, 89799), (333, 59057), (657, 29933), (809, 24309), (2427, 8103), (2701, 7281)]