21214557

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25903}}^1$

素因数の和:25929

約数の個数: 24

約数和(自身を含む): 37716224

約数和(自身を除く): 16501667

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25903, 77709, 181321, 233127, 336739, 543963, 1010217, 1631889, 2357173, 3030651, 7071519, 21214557]

約数ペア:

[(1, 21214557), (3, 7071519), (7, 3030651), (9, 2357173), (13, 1631889), (21, 1010217), (39, 543963), (63, 336739), (91, 233127), (117, 181321), (273, 77709), (819, 25903)]