21807549

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{5279}}^1$

素因数の和:5311

約数の個数: 24

約数和(自身を含む): 34594560

約数和(自身を除く): 12787011

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 1377, 4131, 5279, 15837, 47511, 89743, 142533, 269229, 427599, 807687, 1282797, 2423061, 7269183, 21807549]

約数ペア:

[(1, 21807549), (3, 7269183), (9, 2423061), (17, 1282797), (27, 807687), (51, 427599), (81, 269229), (153, 142533), (243, 89743), (459, 47511), (1377, 15837), (4131, 5279)]