20687901

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{929}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 29789760

約数和(自身を除く): 9101859

約数列:

[1, 3, 13, 39, 571, 929, 1713, 2787, 7423, 12077, 22269, 36231, 530459, 1591377, 6895967, 20687901]

約数ペア:

[(1, 20687901), (3, 6895967), (13, 1591377), (39, 530459), (571, 36231), (929, 22269), (1713, 12077), (2787, 7423)]