19800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{11}}^1$

素因数の和:33

約数の個数: 72

約数和(自身を含む): 72540

約数和(自身を除く): 52740

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 25, 30, 33, 36, 40, 44, 45, 50, 55, 60, 66, 72, 75, 88, 90, 99, 100, 110, 120, 132, 150, 165, 180, 198, 200, 220, 225, 264, 275, 300, 330, 360, 396, 440, 450, 495, 550, 600, 660, 792, 825, 900, 990, 1100, 1320, 1650, 1800, 1980, 2200, 2475, 3300, 3960, 4950, 6600, 9900, 19800]

約数ペア:

[(1, 19800), (2, 9900), (3, 6600), (4, 4950), (5, 3960), (6, 3300), (8, 2475), (9, 2200), (10, 1980), (11, 1800), (12, 1650), (15, 1320), (18, 1100), (20, 990), (22, 900), (24, 825), (25, 792), (30, 660), (33, 600), (36, 550), (40, 495), (44, 450), (45, 440), (50, 396), (55, 360), (60, 330), (66, 300), (72, 275), (75, 264), (88, 225), (90, 220), (99, 200), (100, 198), (110, 180), (120, 165), (132, 150)]