20457560

素因数分解:

$2^3\times 5^1\times {\mathrm{511439}}^1$

素因数の和:511450

約数の個数: 16

約数和(自身を含む): 46029600

約数和(自身を除く): 25572040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 511439, 1022878, 2045756, 2557195, 4091512, 5114390, 10228780, 20457560]

約数ペア:

[(1, 20457560), (2, 10228780), (4, 5114390), (5, 4091512), (8, 2557195), (10, 2045756), (20, 1022878), (40, 511439)]