20987344

素因数分解:

$2^4\times 7^1\times {\mathrm{187387}}^1$

素因数の和:187402

約数の個数: 20

約数和(自身を含む): 46472224

約数和(自身を除く): 25484880

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 187387, 374774, 749548, 1311709, 1499096, 2623418, 2998192, 5246836, 10493672, 20987344]

約数ペア:

[(1, 20987344), (2, 10493672), (4, 5246836), (7, 2998192), (8, 2623418), (14, 1499096), (16, 1311709), (28, 749548), (56, 374774), (112, 187387)]