21891050713

素因数分解:

$7^2\times {\mathrm{107}}^1\times {\mathrm{4175291}}^1$

素因数の和:4175412

約数の個数: 12

約数和(自身を含む): 25703097552

約数和(自身を除く): 3812046839

約数列:

[1, 7, 49, 107, 749, 5243, 4175291, 29227037, 204589259, 446756137, 3127292959, 21891050713]

約数ペア:

[(1, 21891050713), (7, 3127292959), (49, 446756137), (107, 204589259), (749, 29227037), (5243, 4175291)]