16218321

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20873}}^1$

素因数の和:20920

約数の個数: 16

約数和(自身を含む): 25382784

約数和(自身を除く): 9164463

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 20873, 62619, 146111, 438333, 772301, 2316903, 5406107, 16218321]

約数ペア:

[(1, 16218321), (3, 5406107), (7, 2316903), (21, 772301), (37, 438333), (111, 146111), (259, 62619), (777, 20873)]