81000

素因数分解:

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

素因数の和:33

約数の個数: 80

約数和(自身を含む): 283140

約数和(自身を除く): 202140

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 27, 30, 36, 40, 45, 50, 54, 60, 72, 75, 81, 90, 100, 108, 120, 125, 135, 150, 162, 180, 200, 216, 225, 250, 270, 300, 324, 360, 375, 405, 450, 500, 540, 600, 648, 675, 750, 810, 900, 1000, 1080, 1125, 1350, 1500, 1620, 1800, 2025, 2250, 2700, 3000, 3240, 3375, 4050, 4500, 5400, 6750, 8100, 9000, 10125, 13500, 16200, 20250, 27000, 40500, 81000]

約数ペア:

[(1, 81000), (2, 40500), (3, 27000), (4, 20250), (5, 16200), (6, 13500), (8, 10125), (9, 9000), (10, 8100), (12, 6750), (15, 5400), (18, 4500), (20, 4050), (24, 3375), (25, 3240), (27, 3000), (30, 2700), (36, 2250), (40, 2025), (45, 1800), (50, 1620), (54, 1500), (60, 1350), (72, 1125), (75, 1080), (81, 1000), (90, 900), (100, 810), (108, 750), (120, 675), (125, 648), (135, 600), (150, 540), (162, 500), (180, 450), (200, 405), (216, 375), (225, 360), (250, 324), (270, 300)]