129772400

素因数分解:

$2^4\times 5^2\times {\mathrm{324431}}^1$

素因数の和:324449

約数の個数: 30

約数和(自身を含む): 311779152

約数和(自身を除く): 182006752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 324431, 648862, 1297724, 1622155, 2595448, 3244310, 5190896, 6488620, 8110775, 12977240, 16221550, 25954480, 32443100, 64886200, 129772400]

約数ペア:

[(1, 129772400), (2, 64886200), (4, 32443100), (5, 25954480), (8, 16221550), (10, 12977240), (16, 8110775), (20, 6488620), (25, 5190896), (40, 3244310), (50, 2595448), (80, 1622155), (100, 1297724), (200, 648862), (400, 324431)]