21708029

素因数分解:

$7^2\times {\mathrm{31}}^2\times {\mathrm{461}}^1$

素因数の和:537

約数の個数: 18

約数和(自身を含む): 26149662

約数和(自身を除く): 4441633

約数列:

[1, 7, 31, 49, 217, 461, 961, 1519, 3227, 6727, 14291, 22589, 47089, 100037, 443021, 700259, 3101147, 21708029]

約数ペア:

[(1, 21708029), (7, 3101147), (31, 700259), (49, 443021), (217, 100037), (461, 47089), (961, 22589), (1519, 14291), (3227, 6727)]