21155574

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{320539}}^1$

素因数の和:320555

約数の個数: 16

約数和(自身を含む): 46157760

約数和(自身を除く): 25002186

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 320539, 641078, 961617, 1923234, 3525929, 7051858, 10577787, 21155574]

約数ペア:

[(1, 21155574), (2, 10577787), (3, 7051858), (6, 3525929), (11, 1923234), (22, 961617), (33, 641078), (66, 320539)]