20689851

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{75787}}^1$

素因数の和:75810

約数の個数: 16

約数和(自身を含む): 33953024

約数和(自身を除く): 13263173

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 75787, 227361, 530509, 985231, 1591527, 2955693, 6896617, 20689851]

約数ペア:

[(1, 20689851), (3, 6896617), (7, 2955693), (13, 1591527), (21, 985231), (39, 530509), (91, 227361), (273, 75787)]