20974161

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1\times {\mathrm{839}}^1$

素因数の和:1496

約数の個数: 16

約数和(自身を含む): 30199680

約数和(自身を除く): 9225519

約数列:

[1, 3, 13, 39, 641, 839, 1923, 2517, 8333, 10907, 24999, 32721, 537799, 1613397, 6991387, 20974161]

約数ペア:

[(1, 20974161), (3, 6991387), (13, 1613397), (39, 537799), (641, 32721), (839, 24999), (1923, 10907), (2517, 8333)]