20904933

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1553}}^1$

素因数の和:2204

約数の個数: 16

約数和(自身を含む): 31925376

約数和(自身を除く): 11020443

約数列:

[1, 3, 7, 21, 641, 1553, 1923, 4487, 4659, 10871, 13461, 32613, 995473, 2986419, 6968311, 20904933]

約数ペア:

[(1, 20904933), (3, 6968311), (7, 2986419), (21, 995473), (641, 32613), (1553, 13461), (1923, 10871), (4487, 4659)]