20668689

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2341}}^1$

素因数の和:2462

約数の個数: 20

約数和(自身を含む): 31172020

約数和(自身を除く): 10503331

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2341, 2943, 7023, 8829, 21069, 63207, 189621, 255169, 765507, 2296521, 6889563, 20668689]

約数ペア:

[(1, 20668689), (3, 6889563), (9, 2296521), (27, 765507), (81, 255169), (109, 189621), (327, 63207), (981, 21069), (2341, 8829), (2943, 7023)]