209178918

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{20789}}^1$

素因数の和:20853

約数の個数: 48

約数和(自身を含む): 499458960

約数和(自身を除く): 290280042

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 3354, 5031, 10062, 20789, 41578, 62367, 124734, 187101, 270257, 374202, 540514, 810771, 893927, 1621542, 1787854, 2432313, 2681781, 4864626, 5363562, 8045343, 11621051, 16090686, 23242102, 34863153, 69726306, 104589459, 209178918]

約数ペア:

[(1, 209178918), (2, 104589459), (3, 69726306), (6, 34863153), (9, 23242102), (13, 16090686), (18, 11621051), (26, 8045343), (39, 5363562), (43, 4864626), (78, 2681781), (86, 2432313), (117, 1787854), (129, 1621542), (234, 893927), (258, 810771), (387, 540514), (559, 374202), (774, 270257), (1118, 187101), (1677, 124734), (3354, 62367), (5031, 41578), (10062, 20789)]