21542121

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:581

約数の個数: 24

約数和(自身を含む): 32108544

約数和(自身を除く): 10566423

約数列:

[1, 3, 9, 47, 127, 141, 381, 401, 423, 1143, 1203, 3609, 5969, 17907, 18847, 50927, 53721, 56541, 152781, 169623, 458343, 2393569, 7180707, 21542121]

約数ペア:

[(1, 21542121), (3, 7180707), (9, 2393569), (47, 458343), (127, 169623), (141, 152781), (381, 56541), (401, 53721), (423, 50927), (1143, 18847), (1203, 17907), (3609, 5969)]