20127861

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2423}}^1$

素因数の和:2513

約数の個数: 24

約数和(自身を含む): 31764096

約数和(自身を除く): 11636235

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2423, 2769, 7269, 8307, 21807, 31499, 94497, 172033, 283491, 516099, 1548297, 2236429, 6709287, 20127861]

約数ペア:

[(1, 20127861), (3, 6709287), (9, 2236429), (13, 1548297), (39, 516099), (71, 283491), (117, 172033), (213, 94497), (639, 31499), (923, 21807), (2423, 8307), (2769, 7269)]