20919543

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{631}}^1$

素因数の和:934

約数の個数: 16

約数和(自身を含む): 28697856

約数和(自身を除く): 7778313

約数列:

[1, 3, 43, 129, 257, 631, 771, 1893, 11051, 27133, 33153, 81399, 162167, 486501, 6973181, 20919543]

約数ペア:

[(1, 20919543), (3, 6973181), (43, 486501), (129, 162167), (257, 81399), (631, 33153), (771, 27133), (1893, 11051)]