20921440519

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{313}}^1\times {\mathrm{120871}}^1$

素因数の和:121270

約数の個数: 16

約数和(自身を含む): 24290437120

約数和(自身を除く): 3368996601

約数列:

[1, 7, 79, 313, 553, 2191, 24727, 120871, 173089, 846097, 9548809, 37832623, 66841663, 264828361, 2988777217, 20921440519]

約数ペア:

[(1, 20921440519), (7, 2988777217), (79, 264828361), (313, 66841663), (553, 37832623), (2191, 9548809), (24727, 846097), (120871, 173089)]