20431251

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{39827}}^1$

素因数の和:39855

約数の個数: 16

約数和(自身を含む): 31862400

約数和(自身を除く): 11431149

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 39827, 119481, 358443, 756713, 1075329, 2270139, 6810417, 20431251]

約数ペア:

[(1, 20431251), (3, 6810417), (9, 2270139), (19, 1075329), (27, 756713), (57, 358443), (171, 119481), (513, 39827)]