20676400

素因数分解:

$2^4\times 5^2\times {\mathrm{51691}}^1$

素因数の和:51709

約数の個数: 30

約数和(自身を含む): 49676012

約数和(自身を除く): 28999612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51691, 103382, 206764, 258455, 413528, 516910, 827056, 1033820, 1292275, 2067640, 2584550, 4135280, 5169100, 10338200, 20676400]

約数ペア:

[(1, 20676400), (2, 10338200), (4, 5169100), (5, 4135280), (8, 2584550), (10, 2067640), (16, 1292275), (20, 1033820), (25, 827056), (40, 516910), (50, 413528), (80, 258455), (100, 206764), (200, 103382), (400, 51691)]