18991250

素因数分解:

$2^1\times 5^4\times {\mathrm{15193}}^1$

素因数の和:15215

約数の個数: 20

約数和(自身を含む): 35599542

約数和(自身を除く): 16608292

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 15193, 30386, 75965, 151930, 379825, 759650, 1899125, 3798250, 9495625, 18991250]

約数ペア:

[(1, 18991250), (2, 9495625), (5, 3798250), (10, 1899125), (25, 759650), (50, 379825), (125, 151930), (250, 75965), (625, 30386), (1250, 15193)]