20989544

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 40350720

約数和(自身を除く): 19361176

約数列:

[1, 2, 4, 8, 73, 127, 146, 254, 283, 292, 508, 566, 584, 1016, 1132, 2264, 9271, 18542, 20659, 35941, 37084, 41318, 71882, 74168, 82636, 143764, 165272, 287528, 2623693, 5247386, 10494772, 20989544]

約数ペア:

[(1, 20989544), (2, 10494772), (4, 5247386), (8, 2623693), (73, 287528), (127, 165272), (146, 143764), (254, 82636), (283, 74168), (292, 71882), (508, 41318), (566, 37084), (584, 35941), (1016, 20659), (1132, 18542), (2264, 9271)]