51253360

素因数分解:

$2^4\times 5^1\times {\mathrm{640667}}^1$

素因数の和:640680

約数の個数: 20

約数和(自身を含む): 119164248

約数和(自身を除く): 67910888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640667, 1281334, 2562668, 3203335, 5125336, 6406670, 10250672, 12813340, 25626680, 51253360]

約数ペア:

[(1, 51253360), (2, 25626680), (4, 12813340), (5, 10250672), (8, 6406670), (10, 5125336), (16, 3203335), (20, 2562668), (40, 1281334), (80, 640667)]