20499840

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{3559}}^1$

素因数の和:3584

約数の個数: 96

約数和(自身を含む): 70808400

約数和(自身を除く): 50308560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 288, 320, 360, 384, 480, 576, 640, 720, 960, 1152, 1440, 1920, 2880, 3559, 5760, 7118, 10677, 14236, 17795, 21354, 28472, 32031, 35590, 42708, 53385, 56944, 64062, 71180, 85416, 106770, 113888, 128124, 142360, 160155, 170832, 213540, 227776, 256248, 284720, 320310, 341664, 427080, 455552, 512496, 569440, 640620, 683328, 854160, 1024992, 1138880, 1281240, 1366656, 1708320, 2049984, 2277760, 2562480, 3416640, 4099968, 5124960, 6833280, 10249920, 20499840]

約数ペア:

[(1, 20499840), (2, 10249920), (3, 6833280), (4, 5124960), (5, 4099968), (6, 3416640), (8, 2562480), (9, 2277760), (10, 2049984), (12, 1708320), (15, 1366656), (16, 1281240), (18, 1138880), (20, 1024992), (24, 854160), (30, 683328), (32, 640620), (36, 569440), (40, 512496), (45, 455552), (48, 427080), (60, 341664), (64, 320310), (72, 284720), (80, 256248), (90, 227776), (96, 213540), (120, 170832), (128, 160155), (144, 142360), (160, 128124), (180, 113888), (192, 106770), (240, 85416), (288, 71180), (320, 64062), (360, 56944), (384, 53385), (480, 42708), (576, 35590), (640, 32031), (720, 28472), (960, 21354), (1152, 17795), (1440, 14236), (1920, 10677), (2880, 7118), (3559, 5760)]