21393423

素因数分解:

$3^3\times {\mathrm{487}}^1\times {\mathrm{1627}}^1$

素因数の和:2123

約数の個数: 16

約数和(自身を含む): 31778560

約数和(自身を除く): 10385137

約数列:

[1, 3, 9, 27, 487, 1461, 1627, 4383, 4881, 13149, 14643, 43929, 792349, 2377047, 7131141, 21393423]

約数ペア:

[(1, 21393423), (3, 7131141), (9, 2377047), (27, 792349), (487, 43929), (1461, 14643), (1627, 13149), (4383, 4881)]