18986781653

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{7817}}^1\times {\mathrm{20411}}^1$

素因数の和:28252

約数の個数: 16

約数和(自身を含む): 22979666304

約数和(自身を除く): 3992884651

約数列:

[1, 7, 17, 119, 7817, 20411, 54719, 132889, 142877, 346987, 930223, 2428909, 159552787, 1116869509, 2712397379, 18986781653]

約数ペア:

[(1, 18986781653), (7, 2712397379), (17, 1116869509), (119, 159552787), (7817, 2428909), (20411, 930223), (54719, 346987), (132889, 142877)]