66666999

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{3571}}^1$

素因数の和:3715

約数の個数: 24

約数和(自身を含む): 104245248

約数和(自身を除く): 37578249

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 2667, 3571, 6223, 10713, 18669, 24997, 74991, 174979, 453517, 524937, 1360551, 3174619, 9523857, 22222333, 66666999]

約数ペア:

[(1, 66666999), (3, 22222333), (7, 9523857), (21, 3174619), (49, 1360551), (127, 524937), (147, 453517), (381, 174979), (889, 74991), (2667, 24997), (3571, 18669), (6223, 10713)]