20849247

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2143}}^1$

素因数の和:2219

約数の個数: 24

約数和(自身を含む): 32108544

約数和(自身を除く): 11259297

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2143, 3243, 6429, 9729, 19287, 49289, 100721, 147867, 302163, 443601, 906489, 2316583, 6949749, 20849247]

約数ペア:

[(1, 20849247), (3, 6949749), (9, 2316583), (23, 906489), (47, 443601), (69, 302163), (141, 147867), (207, 100721), (423, 49289), (1081, 19287), (2143, 9729), (3243, 6429)]