21971170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{169009}}^1$

素因数の和:169029

約数の個数: 16

約数和(自身を含む): 42590520

約数和(自身を除く): 20619350

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169009, 338018, 845045, 1690090, 2197117, 4394234, 10985585, 21971170]

約数ペア:

[(1, 21971170), (2, 10985585), (5, 4394234), (10, 2197117), (13, 1690090), (26, 845045), (65, 338018), (130, 169009)]