21994687

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4157}}^1$

素因数の和:4218

約数の個数: 16

約数和(自身を含む): 26544672

約数和(自身を除く): 4549985

約数列:

[1, 11, 13, 37, 143, 407, 481, 4157, 5291, 45727, 54041, 153809, 594451, 1691899, 1999517, 21994687]

約数ペア:

[(1, 21994687), (11, 1999517), (13, 1691899), (37, 594451), (143, 153809), (407, 54041), (481, 45727), (4157, 5291)]