78814560400

素因数分解:

$2^4\times 5^2\times {\mathrm{197036401}}^1$

素因数の和:197036419

約数の個数: 30

約数和(自身を含む): 189351982322

約数和(自身を除く): 110537421922

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 197036401, 394072802, 788145604, 985182005, 1576291208, 1970364010, 3152582416, 3940728020, 4925910025, 7881456040, 9851820050, 15762912080, 19703640100, 39407280200, 78814560400]

約数ペア:

[(1, 78814560400), (2, 39407280200), (4, 19703640100), (5, 15762912080), (8, 9851820050), (10, 7881456040), (16, 4925910025), (20, 3940728020), (25, 3152582416), (40, 1970364010), (50, 1576291208), (80, 985182005), (100, 788145604), (200, 394072802), (400, 197036401)]