19810800

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{5503}}^1$

素因数の和:5527

約数の個数: 90

約数和(自身を含む): 68761472

約数和(自身を除く): 48950672

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, 144, 150, 180, 200, 225, 240, 300, 360, 400, 450, 600, 720, 900, 1200, 1800, 3600, 5503, 11006, 16509, 22012, 27515, 33018, 44024, 49527, 55030, 66036, 82545, 88048, 99054, 110060, 132072, 137575, 165090, 198108, 220120, 247635, 264144, 275150, 330180, 396216, 412725, 440240, 495270, 550300, 660360, 792432, 825450, 990540, 1100600, 1238175, 1320720, 1650900, 1981080, 2201200, 2476350, 3301800, 3962160, 4952700, 6603600, 9905400, 19810800]

約数ペア:

[(1, 19810800), (2, 9905400), (3, 6603600), (4, 4952700), (5, 3962160), (6, 3301800), (8, 2476350), (9, 2201200), (10, 1981080), (12, 1650900), (15, 1320720), (16, 1238175), (18, 1100600), (20, 990540), (24, 825450), (25, 792432), (30, 660360), (36, 550300), (40, 495270), (45, 440240), (48, 412725), (50, 396216), (60, 330180), (72, 275150), (75, 264144), (80, 247635), (90, 220120), (100, 198108), (120, 165090), (144, 137575), (150, 132072), (180, 110060), (200, 99054), (225, 88048), (240, 82545), (300, 66036), (360, 55030), (400, 49527), (450, 44024), (600, 33018), (720, 27515), (900, 22012), (1200, 16509), (1800, 11006), (3600, 5503)]