21340191

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{709}}^1$

素因数の和:918

約数の個数: 16

約数和(自身を含む): 29081600

約数和(自身を除く): 7741409

約数列:

[1, 3, 79, 127, 237, 381, 709, 2127, 10033, 30099, 56011, 90043, 168033, 270129, 7113397, 21340191]

約数ペア:

[(1, 21340191), (3, 7113397), (79, 270129), (127, 168033), (237, 90043), (381, 56011), (709, 30099), (2127, 10033)]