21393845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{541}}^1\times {\mathrm{719}}^1$

素因数の和:1276

約数の個数: 16

約数和(自身を含む): 28097280

約数和(自身を除く): 6703435

約数列:

[1, 5, 11, 55, 541, 719, 2705, 3595, 5951, 7909, 29755, 39545, 388979, 1944895, 4278769, 21393845]

約数ペア:

[(1, 21393845), (5, 4278769), (11, 1944895), (55, 388979), (541, 39545), (719, 29755), (2705, 7909), (3595, 5951)]