21691274

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{51893}}^1$

素因数の和:51925

約数の個数: 16

約数和(自身を含む): 37363680

約数和(自身を除く): 15672406

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 51893, 103786, 570823, 985967, 1141646, 1971934, 10845637, 21691274]

約数ペア:

[(1, 21691274), (2, 10845637), (11, 1971934), (19, 1141646), (22, 985967), (38, 570823), (209, 103786), (418, 51893)]