20945810

素因数分解:

$2^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{4999}}^1$

素因数の和:5425

約数の個数: 16

約数和(自身を含む): 37800000

約数和(自身を除く): 16854190

約数列:

[1, 2, 5, 10, 419, 838, 2095, 4190, 4999, 9998, 24995, 49990, 2094581, 4189162, 10472905, 20945810]

約数ペア:

[(1, 20945810), (2, 10472905), (5, 4189162), (10, 2094581), (419, 49990), (838, 24995), (2095, 9998), (4190, 4999)]