19997516

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{64927}}^1$

素因数の和:64949

約数の個数: 24

約数和(自身を含む): 43631616

約数和(自身を除く): 23634100

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 64927, 129854, 259708, 454489, 714197, 908978, 1428394, 1817956, 2856788, 4999379, 9998758, 19997516]

約数ペア:

[(1, 19997516), (2, 9998758), (4, 4999379), (7, 2856788), (11, 1817956), (14, 1428394), (22, 908978), (28, 714197), (44, 454489), (77, 259708), (154, 129854), (308, 64927)]