20872918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{8867}}^1$

素因数の和:8987

約数の個数: 16

約数和(自身を含む): 34478784

約数和(自身を除く): 13605866

約数列:

[1, 2, 11, 22, 107, 214, 1177, 2354, 8867, 17734, 97537, 195074, 948769, 1897538, 10436459, 20872918]

約数ペア:

[(1, 20872918), (2, 10436459), (11, 1897538), (22, 948769), (107, 195074), (214, 97537), (1177, 17734), (2354, 8867)]