21163197

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{27883}}^1$

素因数の和:27920

約数の個数: 16

約数和(自身を含む): 32122368

約数和(自身を除く): 10959171

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 27883, 83649, 306713, 641309, 920139, 1923927, 7054399, 21163197]

約数ペア:

[(1, 21163197), (3, 7054399), (11, 1923927), (23, 920139), (33, 641309), (69, 306713), (253, 83649), (759, 27883)]