19131707

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 23269680

約数和(自身を除く): 4137973

約数列:

[1, 7, 41, 49, 89, 107, 287, 623, 749, 2009, 3649, 4361, 4387, 5243, 9523, 25543, 30709, 66661, 178801, 214963, 390443, 466627, 2733101, 19131707]

約数ペア:

[(1, 19131707), (7, 2733101), (41, 466627), (49, 390443), (89, 214963), (107, 178801), (287, 66661), (623, 30709), (749, 25543), (2009, 9523), (3649, 5243), (4361, 4387)]