20377040

素因数分解:

$2^4\times 5^1\times {\mathrm{254713}}^1$

素因数の和:254726

約数の個数: 20

約数和(自身を含む): 47376804

約数和(自身を除く): 26999764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254713, 509426, 1018852, 1273565, 2037704, 2547130, 4075408, 5094260, 10188520, 20377040]

約数ペア:

[(1, 20377040), (2, 10188520), (4, 5094260), (5, 4075408), (8, 2547130), (10, 2037704), (16, 1273565), (20, 1018852), (40, 509426), (80, 254713)]