21269397

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{4049}}^1$

素因数の和:4172

約数の個数: 16

約数和(自身を含む): 30326400

約数和(自身を除く): 9057003

約数列:

[1, 3, 17, 51, 103, 309, 1751, 4049, 5253, 12147, 68833, 206499, 417047, 1251141, 7089799, 21269397]

約数ペア:

[(1, 21269397), (3, 7089799), (17, 1251141), (51, 417047), (103, 206499), (309, 68833), (1751, 12147), (4049, 5253)]