21245810

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{20627}}^1$

素因数の和:20737

約数の個数: 16

約数和(自身を含む): 38615616

約数和(自身を除く): 17369806

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 20627, 41254, 103135, 206270, 2124581, 4249162, 10622905, 21245810]

約数ペア:

[(1, 21245810), (2, 10622905), (5, 4249162), (10, 2124581), (103, 206270), (206, 103135), (515, 41254), (1030, 20627)]