18520569

素因数分解:

$3^4\times {\mathrm{373}}^1\times {\mathrm{613}}^1$

素因数の和:998

約数の個数: 20

約数和(自身を含む): 27785956

約数和(自身を除く): 9265387

約数列:

[1, 3, 9, 27, 81, 373, 613, 1119, 1839, 3357, 5517, 10071, 16551, 30213, 49653, 228649, 685947, 2057841, 6173523, 18520569]

約数ペア:

[(1, 18520569), (3, 6173523), (9, 2057841), (27, 685947), (81, 228649), (373, 49653), (613, 30213), (1119, 16551), (1839, 10071), (3357, 5517)]