18788539

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^2$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 24682752

約数和(自身を除く): 5894213

約数列:

[1, 7, 11, 23, 77, 103, 161, 253, 721, 1133, 1771, 2369, 7931, 10609, 16583, 26059, 74263, 116699, 182413, 244007, 816893, 1708049, 2684077, 18788539]

約数ペア:

[(1, 18788539), (7, 2684077), (11, 1708049), (23, 816893), (77, 244007), (103, 182413), (161, 116699), (253, 74263), (721, 26059), (1133, 16583), (1771, 10609), (2369, 7931)]