20675800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5441}}^1$

素因数の和:5476

約数の個数: 48

約数和(自身を含む): 50610600

約数和(自身を除く): 29934800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5441, 10882, 21764, 27205, 43528, 54410, 103379, 108820, 136025, 206758, 217640, 272050, 413516, 516895, 544100, 827032, 1033790, 1088200, 2067580, 2584475, 4135160, 5168950, 10337900, 20675800]

約数ペア:

[(1, 20675800), (2, 10337900), (4, 5168950), (5, 4135160), (8, 2584475), (10, 2067580), (19, 1088200), (20, 1033790), (25, 827032), (38, 544100), (40, 516895), (50, 413516), (76, 272050), (95, 217640), (100, 206758), (152, 136025), (190, 108820), (200, 103379), (380, 54410), (475, 43528), (760, 27205), (950, 21764), (1900, 10882), (3800, 5441)]