78380217

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{56921}}^1$

素因数の和:56950

約数の個数: 20

約数和(自身を含む): 123976116

約数和(自身を除く): 45595899

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 56921, 170763, 512289, 967657, 1536867, 2902971, 4610601, 8708913, 26126739, 78380217]

約数ペア:

[(1, 78380217), (3, 26126739), (9, 8708913), (17, 4610601), (27, 2902971), (51, 1536867), (81, 967657), (153, 512289), (459, 170763), (1377, 56921)]