21054286

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{1493}}^1$

素因数の和:2147

約数の個数: 16

約数和(自身を含む): 34529328

約数和(自身を除く): 13475042

約数列:

[1, 2, 11, 22, 641, 1282, 1493, 2986, 7051, 14102, 16423, 32846, 957013, 1914026, 10527143, 21054286]

約数ペア:

[(1, 21054286), (2, 10527143), (11, 1914026), (22, 957013), (641, 32846), (1282, 16423), (1493, 14102), (2986, 7051)]