20603009

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1753}}^1$

素因数の和:1856

約数の個数: 16

約数和(自身を含む): 24920832

約数和(自身を除く): 4317823

約数列:

[1, 7, 23, 73, 161, 511, 1679, 1753, 11753, 12271, 40319, 127969, 282233, 895783, 2943287, 20603009]

約数ペア:

[(1, 20603009), (7, 2943287), (23, 895783), (73, 282233), (161, 127969), (511, 40319), (1679, 12271), (1753, 11753)]