18900400

素因数分解:

$2^4\times 5^2\times {\mathrm{47251}}^1$

素因数の和:47269

約数の個数: 30

約数和(自身を含む): 45409172

約数和(自身を除く): 26508772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 47251, 94502, 189004, 236255, 378008, 472510, 756016, 945020, 1181275, 1890040, 2362550, 3780080, 4725100, 9450200, 18900400]

約数ペア:

[(1, 18900400), (2, 9450200), (4, 4725100), (5, 3780080), (8, 2362550), (10, 1890040), (16, 1181275), (20, 945020), (25, 756016), (40, 472510), (50, 378008), (80, 236255), (100, 189004), (200, 94502), (400, 47251)]