19905129

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{10099}}^1$

素因数の和:10181

約数の個数: 16

約数和(自身を含む): 29896000

約数和(自身を除く): 9990871

約数列:

[1, 3, 9, 27, 73, 219, 657, 1971, 10099, 30297, 90891, 272673, 737227, 2211681, 6635043, 19905129]

約数ペア:

[(1, 19905129), (3, 6635043), (9, 2211681), (27, 737227), (73, 272673), (219, 90891), (657, 30297), (1971, 10099)]