20980324

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{2351}}^1$

素因数の和:2475

約数の個数: 24

約数和(自身を含む): 38723328

約数和(自身を除く): 17743004

約数列:

[1, 2, 4, 23, 46, 92, 97, 194, 388, 2231, 2351, 4462, 4702, 8924, 9404, 54073, 108146, 216292, 228047, 456094, 912188, 5245081, 10490162, 20980324]

約数ペア:

[(1, 20980324), (2, 10490162), (4, 5245081), (23, 912188), (46, 456094), (92, 228047), (97, 216292), (194, 108146), (388, 54073), (2231, 9404), (2351, 8924), (4462, 4702)]