21671216

素因数分解:

$2^4\times 7^1\times {\mathrm{193493}}^1$

素因数の和:193508

約数の個数: 20

約数和(自身を含む): 47986512

約数和(自身を除く): 26315296

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193493, 386986, 773972, 1354451, 1547944, 2708902, 3095888, 5417804, 10835608, 21671216]

約数ペア:

[(1, 21671216), (2, 10835608), (4, 5417804), (7, 3095888), (8, 2708902), (14, 1547944), (16, 1354451), (28, 773972), (56, 386986), (112, 193493)]