669654321

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{449131}}^1$

素因数の和:449212

約数の個数: 16

約数和(自身を含む): 1034800128

約数和(自身を除く): 365145807

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 449131, 1347393, 3143917, 9431751, 31888301, 95664903, 223218107, 669654321]

約数ペア:

[(1, 669654321), (3, 223218107), (7, 95664903), (21, 31888301), (71, 9431751), (213, 3143917), (497, 1347393), (1491, 449131)]