21797667

素因数分解:

$3^4\times {\mathrm{439}}^1\times {\mathrm{613}}^1$

素因数の和:1064

約数の個数: 20

約数和(自身を含む): 32689360

約数和(自身を除く): 10891693

約数列:

[1, 3, 9, 27, 81, 439, 613, 1317, 1839, 3951, 5517, 11853, 16551, 35559, 49653, 269107, 807321, 2421963, 7265889, 21797667]

約数ペア:

[(1, 21797667), (3, 7265889), (9, 2421963), (27, 807321), (81, 269107), (439, 49653), (613, 35559), (1317, 16551), (1839, 11853), (3951, 5517)]