19991967

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2118

約数の個数: 16

約数和(自身を含む): 27620352

約数和(自身を除く): 7628385

約数列:

[1, 3, 47, 71, 141, 213, 1997, 3337, 5991, 10011, 93859, 141787, 281577, 425361, 6663989, 19991967]

約数ペア:

[(1, 19991967), (3, 6663989), (47, 425361), (71, 281577), (141, 141787), (213, 93859), (1997, 10011), (3337, 5991)]