21577784

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{50891}}^1$

素因数の和:50950

約数の個数: 16

約数和(自身を含む): 41222520

約数和(自身を除く): 19644736

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 50891, 101782, 203564, 407128, 2697223, 5394446, 10788892, 21577784]

約数ペア:

[(1, 21577784), (2, 10788892), (4, 5394446), (8, 2697223), (53, 407128), (106, 203564), (212, 101782), (424, 50891)]