12847005

素因数分解:

$3^4\times 5^1\times {\mathrm{31721}}^1$

素因数の和:31738

約数の個数: 20

約数和(自身を含む): 23030172

約数和(自身を除く): 10183167

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 31721, 95163, 158605, 285489, 475815, 856467, 1427445, 2569401, 4282335, 12847005]

約数ペア:

[(1, 12847005), (3, 4282335), (5, 2569401), (9, 1427445), (15, 856467), (27, 475815), (45, 285489), (81, 158605), (135, 95163), (405, 31721)]