20427860

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3797}}^1$

素因数の和:4075

約数の個数: 24

約数和(自身を含む): 43069320

約数和(自身を除く): 22641460

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3797, 5380, 7594, 15188, 18985, 37970, 75940, 1021393, 2042786, 4085572, 5106965, 10213930, 20427860]

約数ペア:

[(1, 20427860), (2, 10213930), (4, 5106965), (5, 4085572), (10, 2042786), (20, 1021393), (269, 75940), (538, 37970), (1076, 18985), (1345, 15188), (2690, 7594), (3797, 5380)]