27984987

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:412

約数の個数: 32

約数和(自身を含む): 43137600

約数和(自身を除く): 15152613

約数列:

[1, 3, 9, 27, 37, 109, 111, 257, 327, 333, 771, 981, 999, 2313, 2943, 4033, 6939, 9509, 12099, 28013, 28527, 36297, 84039, 85581, 108891, 252117, 256743, 756351, 1036481, 3109443, 9328329, 27984987]

約数ペア:

[(1, 27984987), (3, 9328329), (9, 3109443), (27, 1036481), (37, 756351), (109, 256743), (111, 252117), (257, 108891), (327, 85581), (333, 84039), (771, 36297), (981, 28527), (999, 28013), (2313, 12099), (2943, 9509), (4033, 6939)]