21253318

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{5419}}^1$

素因数の和:5511

約数の個数: 16

約数和(自身を含む): 33365520

約数和(自身を除く): 12112202

約数列:

[1, 2, 37, 53, 74, 106, 1961, 3922, 5419, 10838, 200503, 287207, 401006, 574414, 10626659, 21253318]

約数ペア:

[(1, 21253318), (2, 10626659), (37, 574414), (53, 401006), (74, 287207), (106, 200503), (1961, 10838), (3922, 5419)]