20938509

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1279}}^1$

素因数の和:1409

約数の個数: 24

約数和(自身を含む): 32348160

約数和(自身を除く): 11409651

約数列:

[1, 3, 9, 17, 51, 107, 153, 321, 963, 1279, 1819, 3837, 5457, 11511, 16371, 21743, 65229, 136853, 195687, 410559, 1231677, 2326501, 6979503, 20938509]

約数ペア:

[(1, 20938509), (3, 6979503), (9, 2326501), (17, 1231677), (51, 410559), (107, 195687), (153, 136853), (321, 65229), (963, 21743), (1279, 16371), (1819, 11511), (3837, 5457)]