1661553

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:366

約数の個数: 20

約数和(自身を含む): 2525028

約数和(自身を除く): 863475

約数列:

[1, 3, 9, 27, 73, 81, 219, 281, 657, 843, 1971, 2529, 5913, 7587, 20513, 22761, 61539, 184617, 553851, 1661553]

約数ペア:

[(1, 1661553), (3, 553851), (9, 184617), (27, 61539), (73, 22761), (81, 20513), (219, 7587), (281, 5913), (657, 2529), (843, 1971)]