28778001

素因数分解:

$3^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{2791}}^1$

素因数の和:3292

約数の個数: 16

約数和(自身を含む): 43957248

約数和(自身を除く): 15179247

約数列:

[1, 3, 7, 21, 491, 1473, 2791, 3437, 8373, 10311, 19537, 58611, 1370381, 4111143, 9592667, 28778001]

約数ペア:

[(1, 28778001), (3, 9592667), (7, 4111143), (21, 1370381), (491, 58611), (1473, 19537), (2791, 10311), (3437, 8373)]