3600400

素因数分解:

$2^4\times 5^2\times {\mathrm{9001}}^1$

素因数の和:9019

約数の個数: 30

約数和(自身を含む): 8650922

約数和(自身を除く): 5050522

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 9001, 18002, 36004, 45005, 72008, 90010, 144016, 180020, 225025, 360040, 450050, 720080, 900100, 1800200, 3600400]

約数ペア:

[(1, 3600400), (2, 1800200), (4, 900100), (5, 720080), (8, 450050), (10, 360040), (16, 225025), (20, 180020), (25, 144016), (40, 90010), (50, 72008), (80, 45005), (100, 36004), (200, 18002), (400, 9001)]