21051890

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{56897}}^1$

素因数の和:56941

約数の個数: 16

約数和(自身を含む): 38918232

約数和(自身を除く): 17866342

約数列:

[1, 2, 5, 10, 37, 74, 185, 370, 56897, 113794, 284485, 568970, 2105189, 4210378, 10525945, 21051890]

約数ペア:

[(1, 21051890), (2, 10525945), (5, 4210378), (10, 2105189), (37, 568970), (74, 284485), (185, 113794), (370, 56897)]