21784383

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{2053}}^1$

素因数の和:2196

約数の個数: 20

約数和(自身を含む): 32806488

約数和(自身を除く): 11022105

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 2053, 3537, 6159, 10611, 18477, 55431, 166293, 268943, 806829, 2420487, 7261461, 21784383]

約数ペア:

[(1, 21784383), (3, 7261461), (9, 2420487), (27, 806829), (81, 268943), (131, 166293), (393, 55431), (1179, 18477), (2053, 10611), (3537, 6159)]