20278279

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1\times {\mathrm{523}}^1$

素因数の和:750

約数の個数: 16

約数和(自身を含む): 24145920

約数和(自身を除く): 3867641

約数列:

[1, 7, 29, 191, 203, 523, 1337, 3661, 5539, 15167, 38773, 99893, 106169, 699251, 2896897, 20278279]

約数ペア:

[(1, 20278279), (7, 2896897), (29, 699251), (191, 106169), (203, 99893), (523, 38773), (1337, 15167), (3661, 5539)]