168400

素因数分解:

$2^4\times 5^2\times {\mathrm{421}}^1$

素因数の和:439

約数の個数: 30

約数和(自身を含む): 405542

約数和(自身を除く): 237142

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 421, 842, 1684, 2105, 3368, 4210, 6736, 8420, 10525, 16840, 21050, 33680, 42100, 84200, 168400]

約数ペア:

[(1, 168400), (2, 84200), (4, 42100), (5, 33680), (8, 21050), (10, 16840), (16, 10525), (20, 8420), (25, 6736), (40, 4210), (50, 3368), (80, 2105), (100, 1684), (200, 842), (400, 421)]