3968559

素因数分解:

$3^2\times 7^2\times {\mathrm{8999}}^1$

素因数の和:9019

約数の個数: 18

約数和(自身を含む): 6669000

約数和(自身を除く): 2700441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 8999, 26997, 62993, 80991, 188979, 440951, 566937, 1322853, 3968559]

約数ペア:

[(1, 3968559), (3, 1322853), (7, 566937), (9, 440951), (21, 188979), (49, 80991), (63, 62993), (147, 26997), (441, 8999)]