28128213

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{541}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 41853240

約数和(自身を除く): 13725027

約数列:

[1, 3, 9, 53, 109, 159, 327, 477, 541, 981, 1623, 4869, 5777, 17331, 28673, 51993, 58969, 86019, 176907, 258057, 530721, 3125357, 9376071, 28128213]

約数ペア:

[(1, 28128213), (3, 9376071), (9, 3125357), (53, 530721), (109, 258057), (159, 176907), (327, 86019), (477, 58969), (541, 51993), (981, 28673), (1623, 17331), (4869, 5777)]