161421903

素因数分解:

$3^4\times {\mathrm{613}}^1\times {\mathrm{3251}}^1$

素因数の和:3876

約数の個数: 20

約数和(自身を含む): 241604088

約数和(自身を除く): 80182185

約数列:

[1, 3, 9, 27, 81, 613, 1839, 3251, 5517, 9753, 16551, 29259, 49653, 87777, 263331, 1992863, 5978589, 17935767, 53807301, 161421903]

約数ペア:

[(1, 161421903), (3, 53807301), (9, 17935767), (27, 5978589), (81, 1992863), (613, 263331), (1839, 87777), (3251, 49653), (5517, 29259), (9753, 16551)]