21280435

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9437}}^1$

素因数の和:9494

約数の個数: 16

約数和(自身を含む): 28540512

約数和(自身を除く): 7260077

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 9437, 47185, 103807, 386917, 519035, 1934585, 4256087, 21280435]

約数ペア:

[(1, 21280435), (5, 4256087), (11, 1934585), (41, 519035), (55, 386917), (205, 103807), (451, 47185), (2255, 9437)]