16689547

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{89}}^2$

素因数の和:235

約数の個数: 18

約数和(自身を含む): 20091588

約数和(自身を除く): 3402041

約数列:

[1, 7, 43, 49, 89, 301, 623, 2107, 3827, 4361, 7921, 26789, 55447, 187523, 340603, 388129, 2384221, 16689547]

約数ペア:

[(1, 16689547), (7, 2384221), (43, 388129), (49, 340603), (89, 187523), (301, 55447), (623, 26789), (2107, 7921), (3827, 4361)]