20548431

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:420

約数の個数: 32

約数和(自身を含む): 31834880

約数和(自身を除く): 11286449

約数列:

[1, 3, 9, 27, 37, 67, 111, 201, 307, 333, 603, 921, 999, 1809, 2479, 2763, 7437, 8289, 11359, 20569, 22311, 34077, 61707, 66933, 102231, 185121, 306693, 555363, 761053, 2283159, 6849477, 20548431]

約数ペア:

[(1, 20548431), (3, 6849477), (9, 2283159), (27, 761053), (37, 555363), (67, 306693), (111, 185121), (201, 102231), (307, 66933), (333, 61707), (603, 34077), (921, 22311), (999, 20569), (1809, 11359), (2479, 8289), (2763, 7437)]