21007906

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1\times {\mathrm{439}}^1$

素因数の和:849

約数の個数: 16

約数和(自身を含む): 32123520

約数和(自身を除く): 11115614

約数列:

[1, 2, 71, 142, 337, 439, 674, 878, 23927, 31169, 47854, 62338, 147943, 295886, 10503953, 21007906]

約数ペア:

[(1, 21007906), (2, 10503953), (71, 295886), (142, 147943), (337, 62338), (439, 47854), (674, 31169), (878, 23927)]