18991216

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{11093}}^1$

素因数の和:11208

約数の個数: 20

約数和(自身を含む): 37142712

約数和(自身を除く): 18151496

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 11093, 22186, 44372, 88744, 177488, 1186951, 2373902, 4747804, 9495608, 18991216]

約数ペア:

[(1, 18991216), (2, 9495608), (4, 4747804), (8, 2373902), (16, 1186951), (107, 177488), (214, 88744), (428, 44372), (856, 22186), (1712, 11093)]