18201986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 12819070

約数列:

[1, 2, 11, 22, 43, 71, 86, 142, 271, 473, 542, 781, 946, 1562, 2981, 3053, 5962, 6106, 11653, 19241, 23306, 33583, 38482, 67166, 128183, 211651, 256366, 423302, 827363, 1654726, 9100993, 18201986]

約数ペア:

[(1, 18201986), (2, 9100993), (11, 1654726), (22, 827363), (43, 423302), (71, 256366), (86, 211651), (142, 128183), (271, 67166), (473, 38482), (542, 33583), (781, 23306), (946, 19241), (1562, 11653), (2981, 6106), (3053, 5962)]