21005768

素因数分解:

$2^3\times 7^1\times {\mathrm{375103}}^1$

素因数の和:375116

約数の個数: 16

約数和(自身を含む): 45012480

約数和(自身を除く): 24006712

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 375103, 750206, 1500412, 2625721, 3000824, 5251442, 10502884, 21005768]

約数ペア:

[(1, 21005768), (2, 10502884), (4, 5251442), (7, 3000824), (8, 2625721), (14, 1500412), (28, 750206), (56, 375103)]