21959894

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43399}}^1$

素因数の和:43435

約数の個数: 16

約数和(自身を含む): 37497600

約数和(自身を除く): 15537706

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 43399, 86798, 477389, 954778, 998177, 1996354, 10979947, 21959894]

約数ペア:

[(1, 21959894), (2, 10979947), (11, 1996354), (22, 998177), (23, 954778), (46, 477389), (253, 86798), (506, 43399)]