20711840

素因数分解:

$2^5\times 5^1\times {\mathrm{129449}}^1$

素因数の和:129464

約数の個数: 24

約数和(自身を含む): 48932100

約数和(自身を除く): 28220260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 129449, 258898, 517796, 647245, 1035592, 1294490, 2071184, 2588980, 4142368, 5177960, 10355920, 20711840]

約数ペア:

[(1, 20711840), (2, 10355920), (4, 5177960), (5, 4142368), (8, 2588980), (10, 2071184), (16, 1294490), (20, 1035592), (32, 647245), (40, 517796), (80, 258898), (160, 129449)]