20019978

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{101111}}^1$

素因数の和:101130

約数の個数: 24

約数和(自身を含む): 47320416

約数和(自身を除く): 27300438

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 101111, 202222, 303333, 606666, 909999, 1112221, 1819998, 2224442, 3336663, 6673326, 10009989, 20019978]

約数ペア:

[(1, 20019978), (2, 10009989), (3, 6673326), (6, 3336663), (9, 2224442), (11, 1819998), (18, 1112221), (22, 909999), (33, 606666), (66, 303333), (99, 202222), (198, 101111)]