72568400

素因数分解:

$2^4\times 5^2\times {\mathrm{181421}}^1$

素因数の和:181439

約数の個数: 30

約数和(自身を含む): 174346542

約数和(自身を除く): 101778142

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 181421, 362842, 725684, 907105, 1451368, 1814210, 2902736, 3628420, 4535525, 7256840, 9071050, 14513680, 18142100, 36284200, 72568400]

約数ペア:

[(1, 72568400), (2, 36284200), (4, 18142100), (5, 14513680), (8, 9071050), (10, 7256840), (16, 4535525), (20, 3628420), (25, 2902736), (40, 1814210), (50, 1451368), (80, 907105), (100, 725684), (200, 362842), (400, 181421)]