21559912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{337}}^1\times {\mathrm{727}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 44291520

約数和(自身を除く): 22731608

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 337, 674, 727, 1348, 1454, 2696, 2908, 3707, 5816, 7414, 7997, 14828, 15994, 29656, 31988, 63976, 244999, 489998, 979996, 1959992, 2694989, 5389978, 10779956, 21559912]

約数ペア:

[(1, 21559912), (2, 10779956), (4, 5389978), (8, 2694989), (11, 1959992), (22, 979996), (44, 489998), (88, 244999), (337, 63976), (674, 31988), (727, 29656), (1348, 15994), (1454, 14828), (2696, 7997), (2908, 7414), (3707, 5816)]