20677778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{2141}}^1$

素因数の和:2593

約数の個数: 16

約数和(自身を含む): 33929280

約数和(自身を除く): 13251502

約数列:

[1, 2, 11, 22, 439, 878, 2141, 4282, 4829, 9658, 23551, 47102, 939899, 1879798, 10338889, 20677778]

約数ペア:

[(1, 20677778), (2, 10338889), (11, 1879798), (22, 939899), (439, 47102), (878, 23551), (2141, 9658), (4282, 4829)]