20563713

素因数分解:

$3^4\times {\mathrm{127}}^1\times {\mathrm{1999}}^1$

素因数の和:2138

約数の個数: 20

約数和(自身を含む): 30976000

約数和(自身を除く): 10412287

約数列:

[1, 3, 9, 27, 81, 127, 381, 1143, 1999, 3429, 5997, 10287, 17991, 53973, 161919, 253873, 761619, 2284857, 6854571, 20563713]

約数ペア:

[(1, 20563713), (3, 6854571), (9, 2284857), (27, 761619), (81, 253873), (127, 161919), (381, 53973), (1143, 17991), (1999, 10287), (3429, 5997)]