21078400

素因数分解:

$2^7\times 5^2\times 7^1\times {\mathrm{941}}^1$

素因数の和:972

約数の個数: 96

約数和(自身を含む): 59572080

約数和(自身を除く): 38493680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 128, 140, 160, 175, 200, 224, 280, 320, 350, 400, 448, 560, 640, 700, 800, 896, 941, 1120, 1400, 1600, 1882, 2240, 2800, 3200, 3764, 4480, 4705, 5600, 6587, 7528, 9410, 11200, 13174, 15056, 18820, 22400, 23525, 26348, 30112, 32935, 37640, 47050, 52696, 60224, 65870, 75280, 94100, 105392, 120448, 131740, 150560, 164675, 188200, 210784, 263480, 301120, 329350, 376400, 421568, 526960, 602240, 658700, 752800, 843136, 1053920, 1317400, 1505600, 2107840, 2634800, 3011200, 4215680, 5269600, 10539200, 21078400]

約数ペア:

[(1, 21078400), (2, 10539200), (4, 5269600), (5, 4215680), (7, 3011200), (8, 2634800), (10, 2107840), (14, 1505600), (16, 1317400), (20, 1053920), (25, 843136), (28, 752800), (32, 658700), (35, 602240), (40, 526960), (50, 421568), (56, 376400), (64, 329350), (70, 301120), (80, 263480), (100, 210784), (112, 188200), (128, 164675), (140, 150560), (160, 131740), (175, 120448), (200, 105392), (224, 94100), (280, 75280), (320, 65870), (350, 60224), (400, 52696), (448, 47050), (560, 37640), (640, 32935), (700, 30112), (800, 26348), (896, 23525), (941, 22400), (1120, 18820), (1400, 15056), (1600, 13174), (1882, 11200), (2240, 9410), (2800, 7528), (3200, 6587), (3764, 5600), (4480, 4705)]