20676722

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2054

約数の個数: 24

約数和(自身を含む): 34901328

約数和(自身を除く): 14224606

約数列:

[1, 2, 11, 22, 43, 86, 121, 242, 473, 946, 1987, 3974, 5203, 10406, 21857, 43714, 85441, 170882, 240427, 480854, 939851, 1879702, 10338361, 20676722]

約数ペア:

[(1, 20676722), (2, 10338361), (11, 1879702), (22, 939851), (43, 480854), (86, 240427), (121, 170882), (242, 85441), (473, 43714), (946, 21857), (1987, 10406), (3974, 5203)]