20510800

素因数分解:

$2^4\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1091}}^1$

素因数の和:1156

約数の個数: 60

約数和(自身を含む): 50371776

約数和(自身を除く): 29860976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 47, 50, 80, 94, 100, 188, 200, 235, 376, 400, 470, 752, 940, 1091, 1175, 1880, 2182, 2350, 3760, 4364, 4700, 5455, 8728, 9400, 10910, 17456, 18800, 21820, 27275, 43640, 51277, 54550, 87280, 102554, 109100, 205108, 218200, 256385, 410216, 436400, 512770, 820432, 1025540, 1281925, 2051080, 2563850, 4102160, 5127700, 10255400, 20510800]

約数ペア:

[(1, 20510800), (2, 10255400), (4, 5127700), (5, 4102160), (8, 2563850), (10, 2051080), (16, 1281925), (20, 1025540), (25, 820432), (40, 512770), (47, 436400), (50, 410216), (80, 256385), (94, 218200), (100, 205108), (188, 109100), (200, 102554), (235, 87280), (376, 54550), (400, 51277), (470, 43640), (752, 27275), (940, 21820), (1091, 18800), (1175, 17456), (1880, 10910), (2182, 9400), (2350, 8728), (3760, 5455), (4364, 4700)]