21247810

素因数分解:

$2^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{4363}}^1$

素因数の和:4857

約数の個数: 16

約数和(自身を含む): 38333376

約数和(自身を除く): 17085566

約数列:

[1, 2, 5, 10, 487, 974, 2435, 4363, 4870, 8726, 21815, 43630, 2124781, 4249562, 10623905, 21247810]

約数ペア:

[(1, 21247810), (2, 10623905), (5, 4249562), (10, 2124781), (487, 43630), (974, 21815), (2435, 8726), (4363, 4870)]