21981153

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{1471}}^1$

素因数の和:1784

約数の個数: 16

約数和(自身を含む): 31159296

約数和(自身を除く): 9178143

約数列:

[1, 3, 17, 51, 293, 879, 1471, 4413, 4981, 14943, 25007, 75021, 431003, 1293009, 7327051, 21981153]

約数ペア:

[(1, 21981153), (3, 7327051), (17, 1293009), (51, 431003), (293, 75021), (879, 25007), (1471, 14943), (4413, 4981)]