20364560

素因数分解:

$2^4\times 5^1\times {\mathrm{254557}}^1$

素因数の和:254570

約数の個数: 20

約数和(自身を含む): 47347788

約数和(自身を除く): 26983228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254557, 509114, 1018228, 1272785, 2036456, 2545570, 4072912, 5091140, 10182280, 20364560]

約数ペア:

[(1, 20364560), (2, 10182280), (4, 5091140), (5, 4072912), (8, 2545570), (10, 2036456), (16, 1272785), (20, 1018228), (40, 509114), (80, 254557)]