20440007

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 24829200

約数和(自身を除く): 4389193

約数列:

[1, 7, 43, 49, 89, 109, 301, 623, 763, 2107, 3827, 4361, 4687, 5341, 9701, 26789, 32809, 67907, 187523, 229663, 417143, 475349, 2920001, 20440007]

約数ペア:

[(1, 20440007), (7, 2920001), (43, 475349), (49, 417143), (89, 229663), (109, 187523), (301, 67907), (623, 32809), (763, 26789), (2107, 9701), (3827, 5341), (4361, 4687)]