19837540

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2239}}^1$

素因数の和:2691

約数の個数: 24

約数和(自身を含む): 41771520

約数和(自身を除く): 21933980

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 2239, 4430, 4478, 8860, 8956, 11195, 22390, 44780, 991877, 1983754, 3967508, 4959385, 9918770, 19837540]

約数ペア:

[(1, 19837540), (2, 9918770), (4, 4959385), (5, 3967508), (10, 1983754), (20, 991877), (443, 44780), (886, 22390), (1772, 11195), (2215, 8956), (2239, 8860), (4430, 4478)]