20774799

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 33965568

約数和(自身を除く): 13190769

約数列:

[1, 3, 9, 17, 27, 47, 51, 81, 107, 141, 153, 243, 321, 423, 459, 799, 963, 1269, 1377, 1819, 2397, 2889, 3807, 4131, 5029, 5457, 7191, 8667, 11421, 15087, 16371, 21573, 26001, 45261, 49113, 64719, 85493, 135783, 147339, 194157, 256479, 407349, 442017, 769437, 1222047, 2308311, 6924933, 20774799]

約数ペア:

[(1, 20774799), (3, 6924933), (9, 2308311), (17, 1222047), (27, 769437), (47, 442017), (51, 407349), (81, 256479), (107, 194157), (141, 147339), (153, 135783), (243, 85493), (321, 64719), (423, 49113), (459, 45261), (799, 26001), (963, 21573), (1269, 16371), (1377, 15087), (1819, 11421), (2397, 8667), (2889, 7191), (3807, 5457), (4131, 5029)]