19968531

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{26309}}^1$

素因数の和:26346

約数の個数: 16

約数和(自身を含む): 30309120

約数和(自身を除く): 10340589

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 26309, 78927, 289399, 605107, 868197, 1815321, 6656177, 19968531]

約数ペア:

[(1, 19968531), (3, 6656177), (11, 1815321), (23, 868197), (33, 605107), (69, 289399), (253, 78927), (759, 26309)]