21045897

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{293}}^1\times {\mathrm{347}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 31921344

約数和(自身を除く): 10875447

約数列:

[1, 3, 9, 23, 69, 207, 293, 347, 879, 1041, 2637, 3123, 6739, 7981, 20217, 23943, 60651, 71829, 101671, 305013, 915039, 2338433, 7015299, 21045897]

約数ペア:

[(1, 21045897), (3, 7015299), (9, 2338433), (23, 915039), (69, 305013), (207, 101671), (293, 71829), (347, 60651), (879, 23943), (1041, 20217), (2637, 7981), (3123, 6739)]