21061329

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{2447}}^1$

素因数の和:2620

約数の個数: 16

約数和(自身を含む): 29767680

約数和(自身を除く): 8706351

約数列:

[1, 3, 19, 57, 151, 453, 2447, 2869, 7341, 8607, 46493, 139479, 369497, 1108491, 7020443, 21061329]

約数ペア:

[(1, 21061329), (3, 7020443), (19, 1108491), (57, 369497), (151, 139479), (453, 46493), (2447, 8607), (2869, 7341)]