18000

素因数分解:

$2^4\times 3^2\times 5^3$

素因数の和:29

約数の個数: 60

約数和(自身を含む): 62868

約数和(自身を除く): 44868

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 100, 120, 125, 144, 150, 180, 200, 225, 240, 250, 300, 360, 375, 400, 450, 500, 600, 720, 750, 900, 1000, 1125, 1200, 1500, 1800, 2000, 2250, 3000, 3600, 4500, 6000, 9000, 18000]

約数ペア:

[(1, 18000), (2, 9000), (3, 6000), (4, 4500), (5, 3600), (6, 3000), (8, 2250), (9, 2000), (10, 1800), (12, 1500), (15, 1200), (16, 1125), (18, 1000), (20, 900), (24, 750), (25, 720), (30, 600), (36, 500), (40, 450), (45, 400), (48, 375), (50, 360), (60, 300), (72, 250), (75, 240), (80, 225), (90, 200), (100, 180), (120, 150), (125, 144)]