20980070

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{20369}}^1$

素因数の和:20479

約数の個数: 16

約数和(自身を含む): 38132640

約数和(自身を除く): 17152570

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 20369, 40738, 101845, 203690, 2098007, 4196014, 10490035, 20980070]

約数ペア:

[(1, 20980070), (2, 10490035), (5, 4196014), (10, 2098007), (103, 203690), (206, 101845), (515, 40738), (1030, 20369)]