21749001

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{6991}}^1$

素因数の和:7072

約数の個数: 16

約数和(自身を含む): 31212288

約数和(自身を除く): 9463287

約数列:

[1, 3, 17, 51, 61, 183, 1037, 3111, 6991, 20973, 118847, 356541, 426451, 1279353, 7249667, 21749001]

約数ペア:

[(1, 21749001), (3, 7249667), (17, 1279353), (51, 426451), (61, 356541), (183, 118847), (1037, 20973), (3111, 6991)]