19999191

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{20639}}^1$

素因数の和:20678

約数の個数: 16

約数和(自身を含む): 29721600

約数和(自身を除く): 9722409

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 20639, 61917, 350863, 392141, 1052589, 1176423, 6666397, 19999191]

約数ペア:

[(1, 19999191), (3, 6666397), (17, 1176423), (19, 1052589), (51, 392141), (57, 350863), (323, 61917), (969, 20639)]