19702137

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{72169}}^1$

素因数の和:72192

約数の個数: 16

約数和(自身を含む): 32332160

約数和(自身を除く): 12630023

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 72169, 216507, 505183, 938197, 1515549, 2814591, 6567379, 19702137]

約数ペア:

[(1, 19702137), (3, 6567379), (7, 2814591), (13, 1515549), (21, 938197), (39, 505183), (91, 216507), (273, 72169)]