19171809

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{6397}}^1$

素因数の和:6446

約数の個数: 20

約数和(自身を含む): 29418004

約数和(自身を除く): 10246195

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 6397, 19191, 57573, 172719, 236689, 518157, 710067, 2130201, 6390603, 19171809]

約数ペア:

[(1, 19171809), (3, 6390603), (9, 2130201), (27, 710067), (37, 518157), (81, 236689), (111, 172719), (333, 57573), (999, 19191), (2997, 6397)]