18911543

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1163}}^1$

素因数の和:1294

約数の個数: 16

約数和(自身を含む): 22795776

約数和(自身を除く): 3884233

約数列:

[1, 7, 23, 101, 161, 707, 1163, 2323, 8141, 16261, 26749, 117463, 187243, 822241, 2701649, 18911543]

約数ペア:

[(1, 18911543), (7, 2701649), (23, 822241), (101, 187243), (161, 117463), (707, 26749), (1163, 16261), (2323, 8141)]