20689029

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1123}}^1$

素因数の和:1241

約数の個数: 24

約数和(自身を含む): 31561920

約数和(自身を除く): 10872891

約数列:

[1, 3, 9, 23, 69, 89, 207, 267, 801, 1123, 2047, 3369, 6141, 10107, 18423, 25829, 77487, 99947, 232461, 299841, 899523, 2298781, 6896343, 20689029]

約数ペア:

[(1, 20689029), (3, 6896343), (9, 2298781), (23, 899523), (69, 299841), (89, 232461), (207, 99947), (267, 77487), (801, 25829), (1123, 18423), (2047, 10107), (3369, 6141)]