21001456

素因数分解:

$2^4\times 7^1\times {\mathrm{187513}}^1$

素因数の和:187528

約数の個数: 20

約数和(自身を含む): 46503472

約数和(自身を除く): 25502016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 187513, 375026, 750052, 1312591, 1500104, 2625182, 3000208, 5250364, 10500728, 21001456]

約数ペア:

[(1, 21001456), (2, 10500728), (4, 5250364), (7, 3000208), (8, 2625182), (14, 1500104), (16, 1312591), (28, 750052), (56, 375026), (112, 187513)]