20178543

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12479}}^1$

素因数の和:12507

約数の個数: 24

約数和(自身を含む): 34145280

約数和(自身を除く): 13966737

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12479, 37437, 87353, 137269, 262059, 411807, 611471, 960883, 1834413, 2882649, 6726181, 20178543]

約数ペア:

[(1, 20178543), (3, 6726181), (7, 2882649), (11, 1834413), (21, 960883), (33, 611471), (49, 411807), (77, 262059), (147, 137269), (231, 87353), (539, 37437), (1617, 12479)]