20990067

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{18859}}^1$

素因数の和:18922

約数の個数: 16

約数和(自身を含む): 32590080

約数和(自身を除く): 11600013

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 18859, 56577, 132013, 396039, 999527, 2998581, 6996689, 20990067]

約数ペア:

[(1, 20990067), (3, 6996689), (7, 2998581), (21, 999527), (53, 396039), (159, 132013), (371, 56577), (1113, 18859)]