18905019

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47381}}^1$

素因数の和:47410

約数の個数: 16

約数和(自身を含む): 30324480

約数和(自身を除く): 11419461

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 47381, 142143, 331667, 900239, 995001, 2700717, 6301673, 18905019]

約数ペア:

[(1, 18905019), (3, 6301673), (7, 2700717), (19, 995001), (21, 900239), (57, 331667), (133, 142143), (399, 47381)]