20680800

素因数分解:

$2^5\times 3^1\times 5^2\times 7^1\times {\mathrm{1231}}^1$

素因数の和:1261

約数の個数: 144

約数和(自身を含む): 76995072

約数和(自身を除く): 56314272

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 32, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 96, 100, 105, 112, 120, 140, 150, 160, 168, 175, 200, 210, 224, 240, 280, 300, 336, 350, 400, 420, 480, 525, 560, 600, 672, 700, 800, 840, 1050, 1120, 1200, 1231, 1400, 1680, 2100, 2400, 2462, 2800, 3360, 3693, 4200, 4924, 5600, 6155, 7386, 8400, 8617, 9848, 12310, 14772, 16800, 17234, 18465, 19696, 24620, 25851, 29544, 30775, 34468, 36930, 39392, 43085, 49240, 51702, 59088, 61550, 68936, 73860, 86170, 92325, 98480, 103404, 118176, 123100, 129255, 137872, 147720, 172340, 184650, 196960, 206808, 215425, 246200, 258510, 275744, 295440, 344680, 369300, 413616, 430850, 492400, 517020, 590880, 646275, 689360, 738600, 827232, 861700, 984800, 1034040, 1292550, 1378720, 1477200, 1723400, 2068080, 2585100, 2954400, 3446800, 4136160, 5170200, 6893600, 10340400, 20680800]

約数ペア:

[(1, 20680800), (2, 10340400), (3, 6893600), (4, 5170200), (5, 4136160), (6, 3446800), (7, 2954400), (8, 2585100), (10, 2068080), (12, 1723400), (14, 1477200), (15, 1378720), (16, 1292550), (20, 1034040), (21, 984800), (24, 861700), (25, 827232), (28, 738600), (30, 689360), (32, 646275), (35, 590880), (40, 517020), (42, 492400), (48, 430850), (50, 413616), (56, 369300), (60, 344680), (70, 295440), (75, 275744), (80, 258510), (84, 246200), (96, 215425), (100, 206808), (105, 196960), (112, 184650), (120, 172340), (140, 147720), (150, 137872), (160, 129255), (168, 123100), (175, 118176), (200, 103404), (210, 98480), (224, 92325), (240, 86170), (280, 73860), (300, 68936), (336, 61550), (350, 59088), (400, 51702), (420, 49240), (480, 43085), (525, 39392), (560, 36930), (600, 34468), (672, 30775), (700, 29544), (800, 25851), (840, 24620), (1050, 19696), (1120, 18465), (1200, 17234), (1231, 16800), (1400, 14772), (1680, 12310), (2100, 9848), (2400, 8617), (2462, 8400), (2800, 7386), (3360, 6155), (3693, 5600), (4200, 4924)]