21039238

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{86939}}^1$

素因数の和:86963

約数の個数: 12

約数和(自身を含む): 34689060

約数和(自身を除く): 13649822

約数列:

[1, 2, 11, 22, 121, 242, 86939, 173878, 956329, 1912658, 10519619, 21039238]

約数ペア:

[(1, 21039238), (2, 10519619), (11, 1912658), (22, 956329), (121, 173878), (242, 86939)]