17981992

素因数分解:

$2^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{3001}}^1$

素因数の和:3121

約数の個数: 32

約数和(自身を含む): 38905920

約数和(自身を除く): 20923928

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 107, 214, 428, 749, 856, 1498, 2996, 3001, 5992, 6002, 12004, 21007, 24008, 42014, 84028, 168056, 321107, 642214, 1284428, 2247749, 2568856, 4495498, 8990996, 17981992]

約数ペア:

[(1, 17981992), (2, 8990996), (4, 4495498), (7, 2568856), (8, 2247749), (14, 1284428), (28, 642214), (56, 321107), (107, 168056), (214, 84028), (428, 42014), (749, 24008), (856, 21007), (1498, 12004), (2996, 6002), (3001, 5992)]