18004500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{4001}}^1$

素因数の和:4026

約数の個数: 72

約数和(自身を含む): 56812392

約数和(自身を除く): 38807892

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 125, 150, 180, 225, 250, 300, 375, 450, 500, 750, 900, 1125, 1500, 2250, 4001, 4500, 8002, 12003, 16004, 20005, 24006, 36009, 40010, 48012, 60015, 72018, 80020, 100025, 120030, 144036, 180045, 200050, 240060, 300075, 360090, 400100, 500125, 600150, 720180, 900225, 1000250, 1200300, 1500375, 1800450, 2000500, 3000750, 3600900, 4501125, 6001500, 9002250, 18004500]

約数ペア:

[(1, 18004500), (2, 9002250), (3, 6001500), (4, 4501125), (5, 3600900), (6, 3000750), (9, 2000500), (10, 1800450), (12, 1500375), (15, 1200300), (18, 1000250), (20, 900225), (25, 720180), (30, 600150), (36, 500125), (45, 400100), (50, 360090), (60, 300075), (75, 240060), (90, 200050), (100, 180045), (125, 144036), (150, 120030), (180, 100025), (225, 80020), (250, 72018), (300, 60015), (375, 48012), (450, 40010), (500, 36009), (750, 24006), (900, 20005), (1125, 16004), (1500, 12003), (2250, 8002), (4001, 4500)]