28509903

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{3203}}^1$

素因数の和:3275

約数の個数: 24

約数和(自身を含む): 43984512

約数和(自身を除く): 15474609

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2967, 3203, 8901, 9609, 28827, 73669, 137729, 221007, 413187, 663021, 1239561, 3167767, 9503301, 28509903]

約数ペア:

[(1, 28509903), (3, 9503301), (9, 3167767), (23, 1239561), (43, 663021), (69, 413187), (129, 221007), (207, 137729), (387, 73669), (989, 28827), (2967, 9609), (3203, 8901)]