129700400

素因数分解:

$2^4\times 5^2\times {\mathrm{324251}}^1$

素因数の和:324269

約数の個数: 30

約数和(自身を含む): 311606172

約数和(自身を除く): 181905772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 324251, 648502, 1297004, 1621255, 2594008, 3242510, 5188016, 6485020, 8106275, 12970040, 16212550, 25940080, 32425100, 64850200, 129700400]

約数ペア:

[(1, 129700400), (2, 64850200), (4, 32425100), (5, 25940080), (8, 16212550), (10, 12970040), (16, 8106275), (20, 6485020), (25, 5188016), (40, 3242510), (50, 2594008), (80, 1621255), (100, 1297004), (200, 648502), (400, 324251)]