12902800

素因数分解:

$2^4\times 5^2\times {\mathrm{32257}}^1$

素因数の和:32275

約数の個数: 30

約数和(自身を含む): 30999938

約数和(自身を除く): 18097138

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 32257, 64514, 129028, 161285, 258056, 322570, 516112, 645140, 806425, 1290280, 1612850, 2580560, 3225700, 6451400, 12902800]

約数ペア:

[(1, 12902800), (2, 6451400), (4, 3225700), (5, 2580560), (8, 1612850), (10, 1290280), (16, 806425), (20, 645140), (25, 516112), (40, 322570), (50, 258056), (80, 161285), (100, 129028), (200, 64514), (400, 32257)]