20866868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 21045772

約数列:

[1, 2, 4, 11, 22, 41, 43, 44, 82, 86, 164, 172, 269, 451, 473, 538, 902, 946, 1076, 1763, 1804, 1892, 2959, 3526, 5918, 7052, 11029, 11567, 11836, 19393, 22058, 23134, 38786, 44116, 46268, 77572, 121319, 127237, 242638, 254474, 474247, 485276, 508948, 948494, 1896988, 5216717, 10433434, 20866868]

約数ペア:

[(1, 20866868), (2, 10433434), (4, 5216717), (11, 1896988), (22, 948494), (41, 508948), (43, 485276), (44, 474247), (82, 254474), (86, 242638), (164, 127237), (172, 121319), (269, 77572), (451, 46268), (473, 44116), (538, 38786), (902, 23134), (946, 22058), (1076, 19393), (1763, 11836), (1804, 11567), (1892, 11029), (2959, 7052), (3526, 5918)]