20740878

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 46565376

約数和(自身を除く): 25824498

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 127, 129, 211, 254, 258, 381, 387, 422, 633, 762, 774, 1143, 1266, 1899, 2286, 3798, 5461, 9073, 10922, 16383, 18146, 26797, 27219, 32766, 49149, 53594, 54438, 80391, 81657, 98298, 160782, 163314, 241173, 482346, 1152271, 2304542, 3456813, 6913626, 10370439, 20740878]

約数ペア:

[(1, 20740878), (2, 10370439), (3, 6913626), (6, 3456813), (9, 2304542), (18, 1152271), (43, 482346), (86, 241173), (127, 163314), (129, 160782), (211, 98298), (254, 81657), (258, 80391), (381, 54438), (387, 53594), (422, 49149), (633, 32766), (762, 27219), (774, 26797), (1143, 18146), (1266, 16383), (1899, 10922), (2286, 9073), (3798, 5461)]