20989606

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{7283}}^1$

素因数の和:7427

約数の個数: 16

約数和(自身を含む): 34613568

約数和(自身を除く): 13623962

約数列:

[1, 2, 11, 22, 131, 262, 1441, 2882, 7283, 14566, 80113, 160226, 954073, 1908146, 10494803, 20989606]

約数ペア:

[(1, 20989606), (2, 10494803), (11, 1908146), (22, 954073), (131, 160226), (262, 80113), (1441, 14566), (2882, 7283)]