21000784

素因数分解:

$2^4\times 7^1\times {\mathrm{187507}}^1$

素因数の和:187522

約数の個数: 20

約数和(自身を含む): 46501984

約数和(自身を除く): 25501200

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 187507, 375014, 750028, 1312549, 1500056, 2625098, 3000112, 5250196, 10500392, 21000784]

約数ペア:

[(1, 21000784), (2, 10500392), (4, 5250196), (7, 3000112), (8, 2625098), (14, 1500056), (16, 1312549), (28, 750028), (56, 375014), (112, 187507)]