21048640

素因数分解:

$2^6\times 5^1\times {\mathrm{65777}}^1$

素因数の和:65794

約数の個数: 28

約数和(自身を含む): 50122836

約数和(自身を除く): 29074196

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65777, 131554, 263108, 328885, 526216, 657770, 1052432, 1315540, 2104864, 2631080, 4209728, 5262160, 10524320, 21048640]

約数ペア:

[(1, 21048640), (2, 10524320), (4, 5262160), (5, 4209728), (8, 2631080), (10, 2104864), (16, 1315540), (20, 1052432), (32, 657770), (40, 526216), (64, 328885), (80, 263108), (160, 131554), (320, 65777)]