19909800

素因数分解:

$2^3\times 3^4\times 5^2\times {\mathrm{1229}}^1$

素因数の和:1257

約数の個数: 120

約数和(自身を含む): 69205950

約数和(自身を除く): 49296150

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, 135, 150, 162, 180, 200, 216, 225, 270, 300, 324, 360, 405, 450, 540, 600, 648, 675, 810, 900, 1080, 1229, 1350, 1620, 1800, 2025, 2458, 2700, 3240, 3687, 4050, 4916, 5400, 6145, 7374, 8100, 9832, 11061, 12290, 14748, 16200, 18435, 22122, 24580, 29496, 30725, 33183, 36870, 44244, 49160, 55305, 61450, 66366, 73740, 88488, 92175, 99549, 110610, 122900, 132732, 147480, 165915, 184350, 199098, 221220, 245800, 265464, 276525, 331830, 368700, 398196, 442440, 497745, 553050, 663660, 737400, 796392, 829575, 995490, 1106100, 1327320, 1659150, 1990980, 2212200, 2488725, 3318300, 3981960, 4977450, 6636600, 9954900, 19909800]

約数ペア:

[(1, 19909800), (2, 9954900), (3, 6636600), (4, 4977450), (5, 3981960), (6, 3318300), (8, 2488725), (9, 2212200), (10, 1990980), (12, 1659150), (15, 1327320), (18, 1106100), (20, 995490), (24, 829575), (25, 796392), (27, 737400), (30, 663660), (36, 553050), (40, 497745), (45, 442440), (50, 398196), (54, 368700), (60, 331830), (72, 276525), (75, 265464), (81, 245800), (90, 221220), (100, 199098), (108, 184350), (120, 165915), (135, 147480), (150, 132732), (162, 122900), (180, 110610), (200, 99549), (216, 92175), (225, 88488), (270, 73740), (300, 66366), (324, 61450), (360, 55305), (405, 49160), (450, 44244), (540, 36870), (600, 33183), (648, 30725), (675, 29496), (810, 24580), (900, 22122), (1080, 18435), (1229, 16200), (1350, 14748), (1620, 12290), (1800, 11061), (2025, 9832), (2458, 8100), (2700, 7374), (3240, 6145), (3687, 5400), (4050, 4916)]