20663415

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27011}}^1$

素因数の和:27039

約数の個数: 24

約数和(自身を含む): 37924848

約数和(自身を除く): 17261433

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27011, 81033, 135055, 243099, 405165, 459187, 1215495, 1377561, 2295935, 4132683, 6887805, 20663415]

約数ペア:

[(1, 20663415), (3, 6887805), (5, 4132683), (9, 2295935), (15, 1377561), (17, 1215495), (45, 459187), (51, 405165), (85, 243099), (153, 135055), (255, 81033), (765, 27011)]