20905563

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1889}}^1$

素因数の和:1947

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13930917

約数列:

[1, 3, 7, 17, 21, 31, 51, 93, 119, 217, 357, 527, 651, 1581, 1889, 3689, 5667, 11067, 13223, 32113, 39669, 58559, 96339, 175677, 224791, 409913, 674373, 995503, 1229739, 2986509, 6968521, 20905563]

約数ペア:

[(1, 20905563), (3, 6968521), (7, 2986509), (17, 1229739), (21, 995503), (31, 674373), (51, 409913), (93, 224791), (119, 175677), (217, 96339), (357, 58559), (527, 39669), (651, 32113), (1581, 13223), (1889, 11067), (3689, 5667)]