21080794

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20627}}^1$

素因数の和:20709

約数の個数: 16

約数和(自身を含む): 36635328

約数和(自身を除く): 15554534

約数列:

[1, 2, 7, 14, 73, 146, 511, 1022, 20627, 41254, 144389, 288778, 1505771, 3011542, 10540397, 21080794]

約数ペア:

[(1, 21080794), (2, 10540397), (7, 3011542), (14, 1505771), (73, 288778), (146, 144389), (511, 41254), (1022, 20627)]