20395600

素因数分解:

$2^4\times 5^2\times {\mathrm{50989}}^1$

素因数の和:51007

約数の個数: 30

約数和(自身を含む): 49001390

約数和(自身を除く): 28605790

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 50989, 101978, 203956, 254945, 407912, 509890, 815824, 1019780, 1274725, 2039560, 2549450, 4079120, 5098900, 10197800, 20395600]

約数ペア:

[(1, 20395600), (2, 10197800), (4, 5098900), (5, 4079120), (8, 2549450), (10, 2039560), (16, 1274725), (20, 1019780), (25, 815824), (40, 509890), (50, 407912), (80, 254945), (100, 203956), (200, 101978), (400, 50989)]