20490138

素因数分解:

$2^1\times 3^3\times {\mathrm{613}}^1\times {\mathrm{619}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 45681600

約数和(自身を除く): 25191462

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 613, 619, 1226, 1238, 1839, 1857, 3678, 3714, 5517, 5571, 11034, 11142, 16551, 16713, 33102, 33426, 379447, 758894, 1138341, 2276682, 3415023, 6830046, 10245069, 20490138]

約数ペア:

[(1, 20490138), (2, 10245069), (3, 6830046), (6, 3415023), (9, 2276682), (18, 1138341), (27, 758894), (54, 379447), (613, 33426), (619, 33102), (1226, 16713), (1238, 16551), (1839, 11142), (1857, 11034), (3678, 5571), (3714, 5517)]