20998485

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27449}}^1$

素因数の和:27477

約数の個数: 24

約数和(自身を含む): 38539800

約数和(自身を除く): 17541315

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27449, 82347, 137245, 247041, 411735, 466633, 1235205, 1399899, 2333165, 4199697, 6999495, 20998485]

約数ペア:

[(1, 20998485), (3, 6999495), (5, 4199697), (9, 2333165), (15, 1399899), (17, 1235205), (45, 466633), (51, 411735), (85, 247041), (153, 137245), (255, 82347), (765, 27449)]