21293397

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:833

約数の個数: 24

約数和(自身を含む): 31898880

約数和(自身を除く): 10605483

約数列:

[1, 3, 9, 47, 71, 141, 213, 423, 639, 709, 2127, 3337, 6381, 10011, 30033, 33323, 50339, 99969, 151017, 299907, 453051, 2365933, 7097799, 21293397]

約数ペア:

[(1, 21293397), (3, 7097799), (9, 2365933), (47, 453051), (71, 299907), (141, 151017), (213, 99969), (423, 50339), (639, 33323), (709, 30033), (2127, 10011), (3337, 6381)]