19997666

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:666

約数の個数: 32

約数和(自身を含む): 34180608

約数和(自身を除く): 14182942

約数列:

[1, 2, 13, 26, 31, 43, 62, 86, 403, 559, 577, 806, 1118, 1154, 1333, 2666, 7501, 15002, 17329, 17887, 24811, 34658, 35774, 49622, 232531, 322543, 465062, 645086, 769141, 1538282, 9998833, 19997666]

約数ペア:

[(1, 19997666), (2, 9998833), (13, 1538282), (26, 769141), (31, 645086), (43, 465062), (62, 322543), (86, 232531), (403, 49622), (559, 35774), (577, 34658), (806, 24811), (1118, 17887), (1154, 17329), (1333, 15002), (2666, 7501)]