21600

素因数分解:

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

素因数の和:29

約数の個数: 72

約数和(自身を含む): 78120

約数和(自身を除く): 56520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 36, 40, 45, 48, 50, 54, 60, 72, 75, 80, 90, 96, 100, 108, 120, 135, 144, 150, 160, 180, 200, 216, 225, 240, 270, 288, 300, 360, 400, 432, 450, 480, 540, 600, 675, 720, 800, 864, 900, 1080, 1200, 1350, 1440, 1800, 2160, 2400, 2700, 3600, 4320, 5400, 7200, 10800, 21600]

約数ペア:

[(1, 21600), (2, 10800), (3, 7200), (4, 5400), (5, 4320), (6, 3600), (8, 2700), (9, 2400), (10, 2160), (12, 1800), (15, 1440), (16, 1350), (18, 1200), (20, 1080), (24, 900), (25, 864), (27, 800), (30, 720), (32, 675), (36, 600), (40, 540), (45, 480), (48, 450), (50, 432), (54, 400), (60, 360), (72, 300), (75, 288), (80, 270), (90, 240), (96, 225), (100, 216), (108, 200), (120, 180), (135, 160), (144, 150)]