20780523

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 32524800

約数和(自身を除く): 11744277

約数列:

[1, 3, 9, 23, 27, 69, 109, 207, 307, 327, 621, 921, 981, 2507, 2763, 2943, 7061, 7521, 8289, 21183, 22563, 33463, 63549, 67689, 100389, 190647, 301167, 769649, 903501, 2308947, 6926841, 20780523]

約数ペア:

[(1, 20780523), (3, 6926841), (9, 2308947), (23, 903501), (27, 769649), (69, 301167), (109, 190647), (207, 100389), (307, 67689), (327, 63549), (621, 33463), (921, 22563), (981, 21183), (2507, 8289), (2763, 7521), (2943, 7061)]