21109881

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{613}}^1\times {\mathrm{883}}^1$

素因数の和:1512

約数の個数: 16

約数和(自身を含む): 30395456

約数和(自身を除く): 9285575

約数列:

[1, 3, 13, 39, 613, 883, 1839, 2649, 7969, 11479, 23907, 34437, 541279, 1623837, 7036627, 21109881]

約数ペア:

[(1, 21109881), (3, 7036627), (13, 1623837), (39, 541279), (613, 34437), (883, 23907), (1839, 11479), (2649, 7969)]