19985917

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{2971}}^1$

素因数の和:3040

約数の個数: 12

約数和(自身を含む): 23609568

約数和(自身を除く): 3623651

約数列:

[1, 7, 31, 217, 961, 2971, 6727, 20797, 92101, 644707, 2855131, 19985917]

約数ペア:

[(1, 19985917), (7, 2855131), (31, 644707), (217, 92101), (961, 20797), (2971, 6727)]