20987054

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{6863}}^1$

素因数の和:7015

約数の個数: 16

約数和(自身を含む): 34594560

約数和(自身を除く): 13607506

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 6863, 13726, 75493, 150986, 953957, 1907914, 10493527, 20987054]

約数ペア:

[(1, 20987054), (2, 10493527), (11, 1907914), (22, 953957), (139, 150986), (278, 75493), (1529, 13726), (3058, 6863)]