21522500

素因数分解:

$2^2\times 5^4\times {\mathrm{8609}}^1$

素因数の和:8633

約数の個数: 30

約数和(自身を含む): 47070870

約数和(自身を除く): 25548370

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8609, 17218, 34436, 43045, 86090, 172180, 215225, 430450, 860900, 1076125, 2152250, 4304500, 5380625, 10761250, 21522500]

約数ペア:

[(1, 21522500), (2, 10761250), (4, 5380625), (5, 4304500), (10, 2152250), (20, 1076125), (25, 860900), (50, 430450), (100, 215225), (125, 172180), (250, 86090), (500, 43045), (625, 34436), (1250, 17218), (2500, 8609)]