20358400

素因数分解:

$2^8\times 5^2\times {\mathrm{3181}}^1$

素因数の和:3207

約数の個数: 54

約数和(自身を含む): 50406062

約数和(自身を除く): 30047662

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, 3181, 3200, 6362, 6400, 12724, 15905, 25448, 31810, 50896, 63620, 79525, 101792, 127240, 159050, 203584, 254480, 318100, 407168, 508960, 636200, 814336, 1017920, 1272400, 2035840, 2544800, 4071680, 5089600, 10179200, 20358400]

約数ペア:

[(1, 20358400), (2, 10179200), (4, 5089600), (5, 4071680), (8, 2544800), (10, 2035840), (16, 1272400), (20, 1017920), (25, 814336), (32, 636200), (40, 508960), (50, 407168), (64, 318100), (80, 254480), (100, 203584), (128, 159050), (160, 127240), (200, 101792), (256, 79525), (320, 63620), (400, 50896), (640, 31810), (800, 25448), (1280, 15905), (1600, 12724), (3181, 6400), (3200, 6362)]