21792861

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{601}}^1$

素因数の和:706

約数の個数: 32

約数和(自身を含む): 34675200

約数和(自身を除く): 12882339

約数列:

[1, 3, 9, 17, 27, 51, 79, 153, 237, 459, 601, 711, 1343, 1803, 2133, 4029, 5409, 10217, 12087, 16227, 30651, 36261, 47479, 91953, 142437, 275859, 427311, 807143, 1281933, 2421429, 7264287, 21792861]

約数ペア:

[(1, 21792861), (3, 7264287), (9, 2421429), (17, 1281933), (27, 807143), (51, 427311), (79, 275859), (153, 142437), (237, 91953), (459, 47479), (601, 36261), (711, 30651), (1343, 16227), (1803, 12087), (2133, 10217), (4029, 5409)]