19973009

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{571}}^1$

素因数の和:860

約数の個数: 16

約数和(自身を含む): 24161280

約数和(自身を除く): 4188271

約数列:

[1, 7, 19, 133, 263, 571, 1841, 3997, 4997, 10849, 34979, 75943, 150173, 1051211, 2853287, 19973009]

約数ペア:

[(1, 19973009), (7, 2853287), (19, 1051211), (133, 150173), (263, 75943), (571, 34979), (1841, 10849), (3997, 4997)]