21278954880

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1231421}}^1$

素因数の和:1231449

約数の個数: 128

約数和(自身を含む): 75363026400

約数和(自身を除く): 54084071520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1440, 1728, 1920, 2160, 2880, 3456, 4320, 5760, 8640, 17280, 1231421, 2462842, 3694263, 4925684, 6157105, 7388526, 9851368, 11082789, 12314210, 14777052, 18471315, 19702736, 22165578, 24628420, 29554104, 33248367, 36942630, 39405472, 44331156, 49256840, 55413945, 59108208, 66496734, 73885260, 78810944, 88662312, 98513680, 110827890, 118216416, 132993468, 147770520, 157621888, 166241835, 177324624, 197027360, 221655780, 236432832, 265986936, 295541040, 332483670, 354649248, 394054720, 443311560, 472865664, 531973872, 591082080, 664967340, 709298496, 788109440, 886623120, 1063947744, 1182164160, 1329934680, 1418596992, 1773246240, 2127895488, 2364328320, 2659869360, 3546492480, 4255790976, 5319738720, 7092984960, 10639477440, 21278954880]

約数ペア:

[(1, 21278954880), (2, 10639477440), (3, 7092984960), (4, 5319738720), (5, 4255790976), (6, 3546492480), (8, 2659869360), (9, 2364328320), (10, 2127895488), (12, 1773246240), (15, 1418596992), (16, 1329934680), (18, 1182164160), (20, 1063947744), (24, 886623120), (27, 788109440), (30, 709298496), (32, 664967340), (36, 591082080), (40, 531973872), (45, 472865664), (48, 443311560), (54, 394054720), (60, 354649248), (64, 332483670), (72, 295541040), (80, 265986936), (90, 236432832), (96, 221655780), (108, 197027360), (120, 177324624), (128, 166241835), (135, 157621888), (144, 147770520), (160, 132993468), (180, 118216416), (192, 110827890), (216, 98513680), (240, 88662312), (270, 78810944), (288, 73885260), (320, 66496734), (360, 59108208), (384, 55413945), (432, 49256840), (480, 44331156), (540, 39405472), (576, 36942630), (640, 33248367), (720, 29554104), (864, 24628420), (960, 22165578), (1080, 19702736), (1152, 18471315), (1440, 14777052), (1728, 12314210), (1920, 11082789), (2160, 9851368), (2880, 7388526), (3456, 6157105), (4320, 4925684), (5760, 3694263), (8640, 2462842), (17280, 1231421)]