19986141

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{17957}}^1$

素因数の和:18020

約数の個数: 16

約数和(自身を含む): 31031424

約数和(自身を除く): 11045283

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 17957, 53871, 125699, 377097, 951721, 2855163, 6662047, 19986141]

約数ペア:

[(1, 19986141), (3, 6662047), (7, 2855163), (21, 951721), (53, 377097), (159, 125699), (371, 53871), (1113, 17957)]