21241755

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27767}}^1$

素因数の和:27795

約数の個数: 24

約数和(自身を含む): 38986272

約数和(自身を除く): 17744517

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27767, 83301, 138835, 249903, 416505, 472039, 1249515, 1416117, 2360195, 4248351, 7080585, 21241755]

約数ペア:

[(1, 21241755), (3, 7080585), (5, 4248351), (9, 2360195), (15, 1416117), (17, 1249515), (45, 472039), (51, 416505), (85, 249903), (153, 138835), (255, 83301), (765, 27767)]