21807138815

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{56641919}}^1$

素因数の和:56641942

約数の個数: 16

約数和(自身を含む): 32625745920

約数和(自身を除く): 10818607105

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 56641919, 283209595, 396493433, 623061109, 1982467165, 3115305545, 4361427763, 21807138815]

約数ペア:

[(1, 21807138815), (5, 4361427763), (7, 3115305545), (11, 1982467165), (35, 623061109), (55, 396493433), (77, 283209595), (385, 56641919)]