20396800

素因数分解:

$2^8\times 5^2\times {\mathrm{3187}}^1$

素因数の和:3213

約数の個数: 54

約数和(自身を含む): 50501108

約数和(自身を除く): 30104308

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3187, 3200, 6374, 6400, 12748, 15935, 25496, 31870, 50992, 63740, 79675, 101984, 127480, 159350, 203968, 254960, 318700, 407936, 509920, 637400, 815872, 1019840, 1274800, 2039680, 2549600, 4079360, 5099200, 10198400, 20396800]

約数ペア:

[(1, 20396800), (2, 10198400), (4, 5099200), (5, 4079360), (8, 2549600), (10, 2039680), (16, 1274800), (20, 1019840), (25, 815872), (32, 637400), (40, 509920), (50, 407936), (64, 318700), (80, 254960), (100, 203968), (128, 159350), (160, 127480), (200, 101984), (256, 79675), (320, 63740), (400, 50992), (640, 31870), (800, 25496), (1280, 15935), (1600, 12748), (3187, 6400), (3200, 6374)]