18211959

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{1489}}^1$

素因数の和:1652

約数の個数: 20

約数和(自身を含む): 27404080

約数和(自身を除く): 9192121

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 1489, 4077, 4467, 12231, 13401, 40203, 120609, 224839, 674517, 2023551, 6070653, 18211959]

約数ペア:

[(1, 18211959), (3, 6070653), (9, 2023551), (27, 674517), (81, 224839), (151, 120609), (453, 40203), (1359, 13401), (1489, 12231), (4077, 4467)]