257652009

素因数分解:

$3^4\times {\mathrm{257}}^1\times {\mathrm{12377}}^1$

素因数の和:12646

約数の個数: 20

約数和(自身を含む): 386416404

約数和(自身を除く): 128764395

約数列:

[1, 3, 9, 27, 81, 257, 771, 2313, 6939, 12377, 20817, 37131, 111393, 334179, 1002537, 3180889, 9542667, 28628001, 85884003, 257652009]

約数ペア:

[(1, 257652009), (3, 85884003), (9, 28628001), (27, 9542667), (81, 3180889), (257, 1002537), (771, 334179), (2313, 111393), (6939, 37131), (12377, 20817)]