20513960

素因数分解:

$2^3\times 5^1\times {\mathrm{512849}}^1$

素因数の和:512860

約数の個数: 16

約数和(自身を含む): 46156500

約数和(自身を除く): 25642540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 512849, 1025698, 2051396, 2564245, 4102792, 5128490, 10256980, 20513960]

約数ペア:

[(1, 20513960), (2, 10256980), (4, 5128490), (5, 4102792), (8, 2564245), (10, 2051396), (20, 1025698), (40, 512849)]