81427868

素因数分解:

$2^2\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{1069}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 144706800

約数和(自身を除く): 63278932

約数列:

[1, 2, 4, 137, 139, 274, 278, 548, 556, 1069, 2138, 4276, 19043, 38086, 76172, 146453, 148591, 292906, 297182, 585812, 594364, 20356967, 40713934, 81427868]

約数ペア:

[(1, 81427868), (2, 40713934), (4, 20356967), (137, 594364), (139, 585812), (274, 297182), (278, 292906), (548, 148591), (556, 146453), (1069, 76172), (2138, 38086), (4276, 19043)]