18978039

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{51431}}^1$

素因数の和:51478

約数の個数: 12

約数和(自身を含む): 28081872

約数和(自身を除く): 9103833

約数列:

[1, 3, 9, 41, 123, 369, 51431, 154293, 462879, 2108671, 6326013, 18978039]

約数ペア:

[(1, 18978039), (3, 6326013), (9, 2108671), (41, 462879), (123, 154293), (369, 51431)]