21860211

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1747}}^1$

素因数の和:1890

約数の個数: 16

約数和(自身を含む): 30149504

約数和(自身を除く): 8289293

約数列:

[1, 3, 43, 97, 129, 291, 1747, 4171, 5241, 12513, 75121, 169459, 225363, 508377, 7286737, 21860211]

約数ペア:

[(1, 21860211), (3, 7286737), (43, 508377), (97, 225363), (129, 169459), (291, 75121), (1747, 12513), (4171, 5241)]