21790400

素因数分解:

$2^6\times 5^2\times {\mathrm{13619}}^1$

素因数の和:13641

約数の個数: 42

約数和(自身を含む): 53621940

約数和(自身を除く): 31831540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13619, 27238, 54476, 68095, 108952, 136190, 217904, 272380, 340475, 435808, 544760, 680950, 871616, 1089520, 1361900, 2179040, 2723800, 4358080, 5447600, 10895200, 21790400]

約数ペア:

[(1, 21790400), (2, 10895200), (4, 5447600), (5, 4358080), (8, 2723800), (10, 2179040), (16, 1361900), (20, 1089520), (25, 871616), (32, 680950), (40, 544760), (50, 435808), (64, 340475), (80, 272380), (100, 217904), (160, 136190), (200, 108952), (320, 68095), (400, 54476), (800, 27238), (1600, 13619)]