9000

素因数分解:

$2^3\times 3^2\times 5^3$

素因数の和:27

約数の個数: 48

約数和(自身を含む): 30420

約数和(自身を除く): 21420

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 125, 150, 180, 200, 225, 250, 300, 360, 375, 450, 500, 600, 750, 900, 1000, 1125, 1500, 1800, 2250, 3000, 4500, 9000]

約数ペア:

[(1, 9000), (2, 4500), (3, 3000), (4, 2250), (5, 1800), (6, 1500), (8, 1125), (9, 1000), (10, 900), (12, 750), (15, 600), (18, 500), (20, 450), (24, 375), (25, 360), (30, 300), (36, 250), (40, 225), (45, 200), (50, 180), (60, 150), (72, 125), (75, 120), (90, 100)]