21188169

素因数分解:

$3^3\times {\mathrm{151}}^1\times {\mathrm{5197}}^1$

素因数の和:5357

約数の個数: 16

約数和(自身を含む): 31603840

約数和(自身を除く): 10415671

約数列:

[1, 3, 9, 27, 151, 453, 1359, 4077, 5197, 15591, 46773, 140319, 784747, 2354241, 7062723, 21188169]

約数ペア:

[(1, 21188169), (3, 7062723), (9, 2354241), (27, 784747), (151, 140319), (453, 46773), (1359, 15591), (4077, 5197)]